JP6952129B2 - Cardboard box dividing device and cardboard box manufacturing device - Google Patents

Description

The present invention relates to a corrugated cardboard box dividing device that divides a corrugated cardboard box folded into a flat shape into a plurality of pieces after various processing is performed on the corrugated cardboard sheet, and a corrugated cardboard box manufacturing device to which the corrugated cardboard box dividing device is applied. be.

A general box-making machine manufactures a flat-shaped corrugated cardboard box by processing and folding a corrugated cardboard sheet, and is a paper feed section, a printing section, a paper ejection section, a die-cut section, a folding section, and a counter ejector. It is composed of parts. The paper feeding unit feeds out the corrugated cardboard sheets stacked on the table one by one and sends them to the printing unit at a constant speed. The printing unit has a printing unit and prints on a corrugated cardboard sheet. The paper ejection portion forms a ruled line to be a fold line on the printed corrugated cardboard sheet, and also processes a groove forming a flap and a glue margin piece for joining. The die-cut portion is a corrugated cardboard sheet on which ruled lines, grooves, and glue margin pieces are formed, and a hand hole or the like is punched out. The folding part is made by moving a corrugated cardboard sheet with ruled lines, grooves, glue margins, hand holes, etc., applying glue to the glue margin pieces, folding them along the ruled lines, and joining the glue margin pieces. It manufactures flat corrugated cardboard boxes. Then, the counter ejector unit stacks corrugated cardboard boxes in which corrugated cardboard sheets are folded and glued, sorts them into a predetermined number of batches, and discharges them.

In such a box making machine, it is desired to improve the production efficiency of corrugated cardboard boxes. Therefore, the box making machine manufactures a corrugated cardboard box in which two corrugated cardboard boxes form a continuous flat shape in the transport direction, and the dividing device divides the two corrugated cardboard boxes having a flat shape into two and one. Technology for manufacturing corrugated cardboard boxes has been proposed. In the case of this technology, since the box making machine can continuously manufacture two corrugated cardboard boxes, the time for manufacturing one corrugated cardboard box is shortened and the production efficiency is improved as compared with the conventional technology. Can be done. As such a corrugated cardboard box dividing device, for example, there is one described in Patent Document 1 below.

U.S. Pat. No. 5,660,095

In the corrugated cardboard box dividing device of Patent Document 1 described above, first, a corrugated cardboard box in which two corrugated cardboard boxes have a continuous flat shape in the transport direction is manufactured, and then the corrugated cardboard boxes having a flat shape for the two corrugated cardboard boxes. Is divided into two to manufacture a corrugated cardboard box of a predetermined size. In this case, since a plurality of corrugated cardboard boxes having a flat shape long in the transport direction are stacked and are in an unstable state, it is necessary to hold the upper portion of the plurality of stacked corrugated cardboard boxes when cutting them. In this case, at the time of cutting, the holding member descends with respect to the plurality of corrugated cardboard boxes stopped on the conveyor and stops at a predetermined pressing position to hold the plurality of corrugated cardboard boxes. However, since the stacking height of a plurality of stacked corrugated cardboard boxes differs depending on the type of corrugated cardboard box to be manufactured and the number of stacked corrugated cardboard boxes varies during manufacturing, the holding member is stopped at the optimum pressing position. It was difficult to control. Further, the hardness (softness) of the corrugated cardboard box differs depending on the type of corrugated cardboard box to be manufactured, and it is also difficult to control the position of the holding member in this respect as well. If the holding member has too weak a force to hold the plurality of corrugated cardboard boxes, the corrugated cardboard boxes will be displaced during cutting and the cutting accuracy will be lowered. On the other hand, if the holding member has too strong a force to hold the plurality of corrugated cardboard boxes, the cutting blade cannot cut the corrugated cardboard boxes and stops.

The present invention solves the above-mentioned problems, and is a corrugated cardboard box dividing device for improving manufacturing accuracy by holding the corrugated cardboard box at an appropriate pressure when cutting the corrugated cardboard box to enable stable cutting of the corrugated cardboard box. It is an object of the present invention to provide a corrugated cardboard box manufacturing apparatus.

The corrugated cardboard box dividing device of the present invention for achieving the above object has a width in which a plurality of continuous corrugated cardboard box connectors are stacked in the thickness direction and intersect in the corrugated cardboard box connection laminate in the transport direction. In a corrugated cardboard box dividing device that cuts and divides along a direction, a lower conveyor that stacks and conveys a plurality of corrugated cardboard box connectors and a pressing force that presses the plurality of corrugated cardboard box connectors stacked on the lower conveyor from above. The device, a cutting blade that divides a plurality of corrugated cardboard box connectors arranged along the width direction of the corrugated cardboard box connector and stacked on the lower conveyor in the front-rear direction, and a plurality of corrugated cardboard box connectors on the lower conveyor. The pressing reaction force when the lifting device for relatively moving the cutting blade in the vertical direction and the plurality of corrugated cardboard box joints in which the pressing measuring members are stacked has been pressed has reached a preset reference pressing reaction force. It is characterized by including a control device that controls the pressing device based on the ascending / descending height of the pressing measuring member.

Therefore, the plurality of stacked corrugated cardboard boxes are mounted on the lower conveyor and conveyed, and are pressed from above by the pressing device at a predetermined cutting position stopped on the lower conveyor, and in this state, the plurality of corrugated cardboard boxes are pressed by the elevating device. As the connecting body and the cutting blade move relative to each other, the plurality of stacked corrugated cardboard box connecting bodies are cut and divided by the cutting blade. At this time, the control device presses a plurality of corrugated cardboard box joints in which the pressing measuring members are stacked in advance, and the elevating height of the pressing measuring member when the pressing reaction force at this time reaches the reference pressing reaction force. Is obtained, and the pressing device is controlled based on the ascending / descending height of the pressing measuring member to press a plurality of corrugated cardboard box joints with an appropriate pressure. As a result, by holding the corrugated cardboard box at an appropriate pressure when cutting the corrugated cardboard box, it is possible to stably cut the corrugated cardboard box and improve the manufacturing accuracy.

In the corrugated cardboard box dividing device of the present invention, the ascending / descending height of the pressure measuring member when the pressing reaction force acting on the pressure measuring member from the stacked corrugated cardboard box connecting bodies reaches the reference pressing reaction force. A height detector for detection is provided, and the control device is characterized in that the pressing device is controlled based on the detection result of the height detector.

Therefore, the height detector detects the elevating height of the pressure measuring member when the pressure reaction force acting on the pressure measurement member from the cardboard box connecting body reaches the reference pressure reaction force, and the control device measures this pressure. Since the pressing device is controlled based on the elevating height of the member, the elevating height of the pressing measuring member when the pressing reaction force reaches the reference pressing reaction force can be detected with high accuracy. The cardboard box joint can be held at an appropriate pressure when cutting.

In the corrugated cardboard box dividing device of the present invention, the pressing device includes a pressing member that is supported so as to be able to move up and down, and a pressing drive device that raises and lowers the pressing member, and the control device is from a corrugated cardboard box connector. It is characterized in that the pressing position of the pressing member by the pressing drive device is adjusted based on the ascending / descending height of the pressing measuring member when the pressing reaction force reaches the reference pressing reaction force.

Therefore, since the pressing position of the pressing member by the pressing drive device is adjusted based on the ascending / descending height of the pressing measuring member when the pressing reaction force from the corrugated cardboard box connecting body reaches the reference pressing reaction force, the corrugated cardboard box connecting body The corrugated cardboard box joint can be held at an appropriate pressure by the pressing member at the time of cutting.

In the corrugated cardboard box dividing device of the present invention, the carry-in lower conveyor is arranged on the upstream side of the corrugated cardboard box connector in the transport direction from the lower conveyor, and the pressure measuring member is arranged on the upper side of the carry-in lower conveyor. It is characterized by that.

Therefore, since the pressure measuring member is arranged on the upstream side of the lower conveyor and above the carry-in lower conveyor, the proper pressing position of the corrugated cardboard box connector by the pressing device is set before the cutting blade cuts the corrugated cardboard box connector. It can be obtained, and the cutting work of the corrugated cardboard box connecting body can be performed quickly.

In the corrugated cardboard box dividing device of the present invention, the pressure measuring member is configured such that the upper pressing member and the lower pressing member can approach and separate from each other and are urged and supported in a direction in which they are separated from each other by the urging member. The member can be moved along the vertical direction by the pressing member moving device, and the control device is used when the pressing reaction force acting on the lower pressing member from the corrugated cardboard box coupling reaches the reference pressing reaction force. It is characterized in that the pressing device is controlled based on the ascending / descending height of the lower pressing member.

Therefore, by lowering the upper pressing member and the lower pressing member by the pressing member moving device, the stacked corrugated cardboard box joints are pressed by the lower pressing member, and at this time, the lower pressing member urges the urging member. It moves to the upper pressing member side against the bearing force, and the pressing reaction force reaches the reference pressing reaction force, and it is easily detected that the pressing reaction force reaches the reference pressing reaction force by the movement of the lower pressing member. It is possible to simplify the structure.

In the corrugated cardboard box dividing device of the present invention, the urging member is a fluid pressure cylinder, and the lower pressing member can be raised and lowered with respect to the upper pressing member, and the lower pressing member is pressed against the upper pressing member. It is characterized in that the member is urged and supported downward.

Therefore, the urging member is a fluid pressure cylinder, and the lower pressing member can be raised and lowered with respect to the upper pressing member by the fluid pressure cylinder, and the lower pressing member is urged and supported downward with respect to the upper pressing member. The fluid pressure cylinder can function as a device for raising and lowering the lower pressing member, and can also function as a device for detecting the pressing reaction force. By giving the urging member multiple functions, the device can be made compact. Can be planned.

The corrugated cardboard box dividing device of the present invention is characterized in that a urging bearing force adjusting device for adjusting the urging bearing force of the downward pressing member by the fluid pressure cylinder is provided.

Therefore, since the urging bearing force of the lower pressing member by the fluid pressure cylinder is adjusted by the urging bearing force adjusting device, the reference pressing reaction force can be adjusted according to the type of the corrugated cardboard box connecting body, and the corrugated cardboard box connecting. Regardless of the type of body, it is possible to obtain an appropriate pressing position of the corrugated cardboard box connecting body by the pressing device.

In the corrugated cardboard box dividing device of the present invention, in the control device, when the corrugated cardboard box connecting body is carried into the carrying-in lower conveyor, the pressing reaction force acting on the pressing measuring member from the corrugated cardboard box connecting body is the reference pressing. If the reaction force is not reached, the pressure measuring member is lowered, and the ascending / descending height of the pressure measuring member when the pressing reaction force acting on the pressure measuring member from the corrugated cardboard box connection reaches the reference pressing reaction force. It is characterized in that the pressing device is controlled based on the above.

Therefore, when the height of the corrugated cardboard box connecting body carried into the carry-in lower conveyor is low, the pressure measuring member is lowered to press the corrugated cardboard box connecting body, and the pressing reaction force acting on the pressing measuring member becomes the reference pressing reaction force. Since the pressing device is controlled based on the elevating height when the cardboard box is reached, an appropriate pressing position of the corrugated cardboard box connecting body by the pressing device can be obtained even when the height of the corrugated cardboard box connecting body is low.

In the corrugated cardboard box dividing device of the present invention, in the control device, when the corrugated cardboard box connecting body is carried into the carrying-in lower conveyor, the pressing reaction force acting on the pressing measuring member from the corrugated cardboard box connecting body is the reference pressing. If the reaction force is reached, the pressure measuring member is raised, and the elevating height of the pressure measuring member when the pressing reaction force acting on the pressure measuring member from the corrugated cardboard box connection is reduced from the reference pressing reaction force. It is characterized in that the pressing device is controlled based on the corrugated cardboard.

Therefore, when the height of the corrugated cardboard box connector carried into the carry-in lower conveyor is high, the pressure measuring member is raised and separated from the corrugated cardboard box connector, and the pressing reaction force acting on the pressing measuring member is larger than the reference pressing reaction force. Since the pressing device is controlled based on the ascending / descending height when lowered, it is possible to obtain an appropriate pressing position of the corrugated cardboard box connecting body by the pressing device even when the height of the corrugated cardboard box connecting body is high.

In the corrugated cardboard box dividing device of the present invention, the pressure measuring member is a carry-in upper conveyor arranged above the carry-in lower conveyor so as to face each other.

Therefore, by using the carry-in conveyor as the pressure measuring member, it is not necessary to separately prepare the pressure measuring member, and the complexity of the structure can be suppressed.

In the corrugated cardboard box dividing device of the present invention, the carry-in upper conveyor that supports the upper part of a plurality of corrugated cardboard box connectors arranged and stacked facing each other above the carry-in lower conveyor and the carry-in upper conveyor are moved up and down. The carry-in upper conveyor moving device, the corrugated cardboard box joint transport conveyor arranged on the upstream side of the carry-in lower conveyor in the transport direction of the corrugated cardboard box connector, and a plurality of corrugated cardboard boxes stacked on the corrugated cardboard box connector transport conveyor. It has a connecting body height detector that detects the height of the connecting body, and the control device is characterized in that the carry-in upper conveyor moving device is controlled based on the detection result of the connecting body height detector.

Therefore, since the carry-in upper conveyor moving device is controlled based on the heights of the plurality of corrugated cardboard box joints stacked on the corrugated cardboard box joint transport conveyor, the plurality of corrugated cardboards transported to the carry-in upper conveyor and the carry-in lower conveyor are controlled. The carry-in upper conveyor can be moved up and down according to the height of the box connector, and the carry-in upper conveyor and the carry-in lower conveyor stabilize the plurality of cardboard box joints regardless of the height of the plurality of cardboard box joints. Can be accepted.

In the corrugated cardboard box dividing device of the present invention, the control device gradually reduces the pressing force of the plurality of corrugated cardboard box connectors by the pressing device when the cutting blade divides the plurality of corrugated cardboard box connectors back and forth. It is characterized by that.

Therefore, when the cutting blade divides the plurality of corrugated cardboard box connectors back and forth, the pressing force of the plurality of corrugated cardboard box connectors by the pressing device is gradually reduced, so that the number of corrugated cardboard box connectors divided by the cutting blade is increased. reduction becomes the pressing force of the cardboard box coupling body decreases with the reaction force acting on the cutting blade from the cardboard box coupling body becomes an appropriate value, it is possible to suppress the damage in time division cardboard box coupling body.

Further, the cardboard box manufacturing apparatus of the present invention includes a paper feeding unit that supplies a double box sheet, a paper ejection unit that performs rule line processing and grooving processing on the surface of the double box sheet, and the double box. A folding portion that forms a cardboard box connecting body by folding a sheet and joining the ends, a counter ejector section that counts and stacks the cardboard box connecting bodies and then discharges them in predetermined numbers, and the cardboard box connecting It is characterized by comprising the cardboard box dividing device for cutting and dividing a body along a width direction intersecting the transport direction.

Therefore, the double box sheet from the paper feed section is subjected to ruled line processing and grooving at the paper ejection section, folded at the folding section and the ends are joined to form a corrugated cardboard box connector, and the counter ejector section is formed. The boxes are counted and stacked, and cut by a dividing device to produce a corrugated cardboard box. When cutting with this dividing device, a plurality of corrugated cardboard box joints in which pressure measuring members are stacked are pressed in advance, and the pressing reaction force at this time moves up and down when the reference pressing reaction force reaches the reference pressing reaction force. The height is obtained, the pressing device is controlled based on the elevating height of the pressing measuring member, and the plurality of corrugated cardboard box joints are pressed with an appropriate pressure. As a result, by holding the corrugated cardboard box at an appropriate pressure when cutting the corrugated cardboard box, it is possible to stably cut the corrugated cardboard box and improve the manufacturing accuracy.

According to the corrugated cardboard box dividing device and the corrugated cardboard box manufacturing device of the present invention, the corrugated cardboard box is held at an appropriate pressure when the corrugated cardboard box is cut, thereby enabling stable cutting of the corrugated cardboard box and improving manufacturing accuracy. Can be done.

FIG. 1 is a schematic configuration diagram showing a corrugated cardboard box manufacturing apparatus of this embodiment. FIG. 2 is a schematic configuration diagram showing a corrugated cardboard box partitioning device of the present embodiment. FIG. 3 is a plan view showing the upper conveyor in the corrugated cardboard box dividing device. FIG. 4 is a plan view showing the lower conveyor in the corrugated cardboard box dividing device. FIG. 5 is a front schematic view showing a cardboard box cutting device. FIG. 6 is a schematic side view showing a cardboard box cutting device. FIG. 7 is a front schematic view showing a corrugated cardboard box positioning device. FIG. 8 is a schematic view showing the operation of the cardboard box positioning device. FIG. 9 is a schematic view showing the operation of the cardboard box positioning device. FIG. 10 is a schematic view showing a pressing position setting device for a corrugated cardboard box. FIG. 11 is a front view showing the detailed structure of the carry-in upper conveyor. FIG. 12 is a schematic view of a carry-in conveyor showing a pressing position detection operation of a corrugated cardboard box. FIG. 13 is a flowchart showing a method of setting a pressing position of a cardboard box. FIG. 14 is a schematic view of a carry-in conveyor showing a pressing position setting operation of a corrugated cardboard box. FIG. 15 is a schematic view of a carry-in conveyor showing a pressing position setting operation of a corrugated cardboard box having a low stacking height. FIG. 16 is a schematic view of a carry-in conveyor showing a pressing position setting operation of a corrugated cardboard box having a high stacking height. FIG. 17 is a time chart showing the operation of the corrugated cardboard box dividing device. FIG. 18 is a schematic view showing a carry-in state of the corrugated cardboard box connector. FIG. 19 is a schematic view showing the retracted state of the upper conveyor. FIG. 20 is a schematic view showing a positioning state by the positioning member. FIG. 21 is a schematic view showing a pressing state by the pressing device. FIG. 22 is a schematic view showing a cut state of the corrugated cardboard box connecting body due to lowering. FIG. 23 is a schematic view showing the ascending state of the cardboard box. FIG. 24 is a schematic view showing the support state of the upper conveyor. FIG. 25 is a schematic view showing a moving state of the downstream positioning member. FIG. 26 is a schematic view showing a carry-out state of the cardboard box. FIG. 27 is a schematic view showing a carry-out state of the corrugated cardboard box and a carry-in state of the corrugated cardboard box connector. FIG. 28 is a plan view showing the double box sheet before folding. FIG. 29 is a schematic configuration diagram showing a carry-in side in the corrugated cardboard box partitioning device of another embodiment.

Hereinafter, preferred embodiments of the corrugated cardboard box dividing device and the corrugated cardboard box manufacturing device according to the present invention will be described in detail with reference to the accompanying drawings. The present invention is not limited to this embodiment, and when there are a plurality of embodiments, the present invention also includes a combination of the respective embodiments.

FIG. 1 is a schematic configuration diagram showing a corrugated cardboard box manufacturing apparatus of this embodiment. In the following description, the transport direction of the cardboard box is Da, the width direction of the cardboard box in the transport state (horizontal direction orthogonal to the transport direction Da) is Db, and the thickness direction of the cardboard box in the transport state (conveyance direction Da). (Vertical direction orthogonal to) is represented by Dc.

In the present embodiment, as shown in FIG. 1, the corrugated cardboard box manufacturing apparatus 10 includes a box making machine 10A and a corrugated cardboard box dividing device (hereinafter, referred to as a dividing device) 71. The box making machine 10A includes a paper feeding unit 11, a printing unit 21, a paper ejection unit 31, a die cutting unit 41, a folding unit 51, and a counter ejector unit 61. The paper feeding section 11, the printing section 21, the paper ejection section 31, the die cutting section 41, the folding section 51, and the counter ejector section 61 form a linear shape along the transport direction Da that conveys the corrugated cardboard sheet S and the corrugated cardboard box B. The dividing device 71 is arranged on the downstream side of the counter ejector unit 61 in the transport direction Da, and the conveyor 81 is arranged between the counter ejector unit 61 and the dividing device 71.

The box making machine 10A manufactures the corrugated cardboard box B by processing the single box sheet of the corrugated cardboard sheet S. The corrugated cardboard box manufacturing apparatus 10 manufactures the corrugated cardboard box B by processing the double box sheet S0 of the corrugated cardboard sheets S. In this case, the box making machine 10A manufactures a corrugated cardboard box connecting body B0 in which two corrugated cardboard boxes B are connected along the transport direction Da by processing the double box sheet S0, and the dividing device 71 uses this corrugated cardboard box. Corrugated cardboard boxes B (B1, B2) are manufactured by cutting the connecting body B0 into two pieces.

First, each device constituting the cardboard box manufacturing device 10 of the present embodiment will be described.

The paper feeding unit 11 feeds out the corrugated cardboard sheets S (single box sheet or double box sheet) one by one and sends them to the printing unit 21 at a constant speed. The paper feed unit 11 includes a table 12, a front pad 13, a supply roller 14, a suction device 15, and a feed roll 16. The table 12 is supported so that a large number of corrugated cardboard sheets S can be stacked and placed on the table 12 and can be raised and lowered. The front pad 13 can position the front end position of the corrugated cardboard sheets S stacked on the table 12, and a gap through which one corrugated cardboard sheet S can pass is secured between the lower end portion and the table 12. .. A plurality of supply rollers 14 are arranged in the transport direction Da of the corrugated cardboard sheet S corresponding to the table 12, and are at the lowest position among a large number of stacked corrugated cardboard sheets S when the table 12 is lowered. The corrugated cardboard sheet S can be sent forward. The suction device 15 sucks the stacked corrugated cardboard sheets S downward, that is, toward the table 12 and the supply roller 14. The feed roll 16 can supply the corrugated cardboard sheet S fed by the supply roller 14 to the printing unit 21.

The printing unit 21 performs multicolor printing (four-color printing in the present embodiment) on the surface of the corrugated cardboard sheet S. In this printing unit 21, four printing units 21A, 21B, 21C, and 21D are arranged in series, and printing can be performed using four ink colors on the surface of the corrugated cardboard sheet S. Each of the printing units 21A, 21B, 21C, and 21D has substantially the same configuration, and includes a printing cylinder 22, an ink supply roll (anilox roll) 23, an ink chamber 24, and a receiving roll 25. A printing plate 26 is attached to the outer peripheral portion of the printing cylinder 22 and is rotatably provided. The ink supply roll 23 is arranged so as to be in contact with the printing plate 26 in the vicinity of the printing cylinder 22 and is rotatably provided. The ink chamber 24 stores ink and is provided in the vicinity of the ink supply roll 23. The receiving roll 25 conveys the corrugated cardboard sheet S while applying a predetermined printing pressure by sandwiching the corrugated cardboard sheet S with the printing cylinder 22, and is rotatably provided below the printing cylinder 22 so as to face the lower side of the printing cylinder 22. There is. Although not shown, each of the printing units 21A, 21B, 21C, and 21D is provided with a pair of upper and lower feed rolls before and after the printing unit 21A, 21B, 21C, and 21D.

The paper ejection unit 31 performs ruled line processing, cutting processing, grooving processing, and glue margin processing on the corrugated cardboard sheet S. The paper ejection portion 31 has a first ruled line roll 32a, a second ruled line roll 32b, a slitter head 33, a first slotter head 34a, a second slotter head 34b, and a third slotter head 34c. ..

A plurality of the first ruled line rolls 32a are formed in a circular shape and are arranged at predetermined intervals in the width direction Db of the corrugated cardboard sheet S. A plurality of the second ruled line rolls 32b are formed in a circular shape and are arranged at predetermined intervals in the width direction Db of the corrugated cardboard sheet S. The first ruled line roll 32a arranged on the lower side is for processing the back surface (lower surface) of the corrugated cardboard sheet S, and the second ruled line roll 32b arranged on the lower side is the same as the first ruled line roll 32a. In addition, the back surface (lower surface) of the corrugated cardboard sheet S is subjected to ruled line processing. The ruled line rolls 32a and 32b are provided so that the receiving rolls 35a and 35b can rotate in synchronization with each other at the upper positions facing each other.

A plurality of first slotter heads 34a are formed in a circular shape and are arranged at predetermined intervals in the width direction Db of the corrugated cardboard sheet S. The first slotter head 34a can perform grooving at a predetermined position on the corrugated cardboard sheet S to be conveyed, and can also perform glue margin processing. A plurality of second slotter heads 34b are formed in a circular shape and are arranged at predetermined intervals in the width direction Db of the corrugated cardboard sheet S. The second slotter head 34b can perform grooving at a predetermined position on the corrugated cardboard sheet S to be conveyed, and can also perform glue margin processing.

The slitter head 33 and the third slotter head 34c are each formed in a circular shape, and a plurality of the slitter head 33 and the third slotter head 34c are arranged at predetermined intervals in the width direction Db of the corrugated cardboard sheet S. The slitter head 33 can cut the end portion of the corrugated cardboard sheet S to be conveyed in the width direction Db. The third slotter head 34c can perform grooving at a predetermined position on the corrugated cardboard sheet S to be conveyed, and can also perform glue margin processing. The slotter heads 34a, 34b, 34c are provided with lower blades 36a, 36b, 36c rotatably at lower positions facing each other in synchronization with each other.

The die-cut portion 41 performs a punching process such as a hand hole on the corrugated cardboard sheet S. The die-cut portion 41 has a pair of upper and lower feed pieces 42, an anvil cylinder 43, and a knife cylinder 44. The feed piece 42 sandwiches and conveys the corrugated cardboard sheet S from above and below, and is provided to be rotatable. The anvil cylinder 43 and the knife cylinder 44 are each formed in a circular shape, and can be rotated synchronously by a drive device (not shown). In this case, the anvil cylinder 43 has an anvil mounted on the outer peripheral portion, while the knife cylinder 44 has a blade mounting base (punching blade) mounted at a predetermined position on the outer peripheral portion.

The folding portion 51 is folded while moving the corrugated cardboard sheet S in the transport direction Da, and both ends in the width direction Db are joined to form a flat corrugated cardboard box B. The folding portion 51 includes an upper transport belt 52, lower transport belts 53 and 54, and a molding device 55. The upper transport belt 52 and the lower transport belts 53 and 54 carry the corrugated cardboard sheet S and the corrugated cardboard box B by sandwiching them from above and below. The molding apparatus 55 has a pair of left and right molding belts, and the molding belts are used to fold each end of the corrugated cardboard sheet S in the width direction while bending downward. Further, the folding portion 51 is provided with a gluing device 56. The gluing device 56 has a glue gun, and by discharging glue at a predetermined timing, gluing can be performed at a predetermined position on the corrugated cardboard sheet S.

The counter ejector unit 61 stacks the corrugated cardboard boxes B while counting them, sorts them into a predetermined number of batches, and then discharges the corrugated cardboard boxes B. The counter ejector unit 61 has a hopper device 62. The hopper device 62 has an elevator 63 that can be raised and lowered on which corrugated cardboard boxes B are stacked, and the elevator 63 is provided with a front plate and a square plate (not shown) as shaping means. A carry-out conveyor 64 is provided below the hopper device 62.

The dividing device 71 is used when the box making machine 10A processes the double box sheet S0 to manufacture a corrugated cardboard box connecting body B0 in which two corrugated cardboard boxes B are connected along the transport direction Da. It is possible to move to the position and the retracted position. When the box making machine 10A processes the single box sheet to manufacture the corrugated cardboard box B, it moves to the retracted position. On the other hand, when the box making machine 10A processes the double box sheet S0 to manufacture the corrugated cardboard box connecting body B0, it moves to the used position. The dividing device 71 cuts the corrugated cardboard box connector B0 into two pieces to manufacture the corrugated cardboard boxes B (B1, B2). The dividing device 71 has a carry-in device 72, a cutting device 73, and a carry-out device 74. The carry-in device 72 receives a plurality of corrugated cardboard box connectors B0 conveyed by the transfer conveyor 81 from the counter ejector unit 61 and supplies them to the cutting device 73. The cutting device 73 manufactures the corrugated cardboard boxes B1 and B2 by dividing the corrugated cardboard box connector B0 into two parts in the front-rear direction. The unloading device 74 receives and unloads the corrugated cardboard boxes B1 and B2 divided into two from the cutting device 73.

Next, a method of processing the double box sheet S0 by the corrugated cardboard box manufacturing apparatus 10 of the present embodiment to manufacture the corrugated cardboard boxes B (B1, B2) will be briefly described. FIG. 28 is a plan view showing the double box sheet before folding.

As shown in FIG. 28, the double box sheet S0 is formed by gluing a corrugated core paper between the front liner and the back liner, and two corrugated cardboard boxes B are manufactured in advance. It is cut to a size that can be used. That is, the double box sheet S0 has a size in which the single box sheets S1 and S2 are connected. In the double box sheet S0, four folding lines 301, 302, 303, 304 are formed in the previous step. The folding lines 301, 302, 303, 304 are for folding the flaps when the corrugated cardboard box B manufactured by the box making machine 10A is assembled later.

As shown in FIG. 1, in the paper feeding unit 11, the double box sheets S0 on which the folding lines 301, 302, 303, and 304 are formed are stacked on the table 12. The double box sheets S0 stacked on the table 12 are positioned by the front pad 13, and when the table 12 is lowered, they are sent out by the plurality of supply rollers 14. Then, the double box sheet S0 is supplied to the printing unit 21 by a pair of feed rolls 16 at a predetermined constant speed.

In the printing unit 21, in each printing unit 21A, 21B, 21C, 21D, ink is supplied from the ink chamber 24 to the surface of the ink supply roll 23, and when the printing cylinder 22 and the ink supply roll 23 rotate, the ink is supplied. The ink on the surface of the roll 23 is transferred to the printing plate 26. Then, when the double box sheet S0 is conveyed between the printing cylinder 22 and the receiving roll 25, the double box sheet S0 is sandwiched between the printing plate 26 and the receiving roll 25, and printing pressure is applied here. The surface is printed with. The printed double box sheet S0 is conveyed to the paper ejection unit 31 by a feed roll.

When the double box sheet S0 passes through the first ruled line roll 32a in the paper ejection portion 31, ruled lines 312, 313, 314, 315 are formed on the back surface (back liner) side as shown in FIG. 28. Further, when the double box sheet S0 passes through the second ruled line roll 32b, the ruled lines 312, 313, 314, 315 are reformed on the back surface (back liner) side of the corrugated cardboard sheet S, similarly to the first ruled line roll 32a. ..

When the double box sheet S0 on which the ruled lines 312, 313, 314 and 315 are formed passes through the slitter head 33, the ends 321a and 321b are cut at the cutting position 311. Further, when the double box sheet S0 passes through the first, second, and third slotter heads 34a, 34b, 34c, the grooves 322a, 322b, 322c, 322d, 323a, 323b, 323c are located at the positions of the ruled lines 321 and 313, 314. , 323d, 324a, 324b, 324c, 324d are formed. At this time, the end portions 325a, 325b, 325c, 325d are cut at the position of the ruled line 315, so that the glue margin pieces 326a, 326b are formed. After that, the double box sheet S0 is conveyed to the die-cut portion 41 as shown in FIG.

At the die-cut portion 41, when the double box sheet S0 passes between the anvil cylinder 43 and the knife cylinder 44, a hand hole (not shown) is formed. However, the hand hole processing is appropriately performed according to the type of the double box sheet S0, and the blade mounting base (punching blade) for performing the hand hole processing when the hand hole is unnecessary is from the knife cylinder 44. It will be removed. In the present embodiment, the manual hole processing of the double box sheet S0 by the die-cut portion 41 is omitted, and the double box sheet S0 passes between the rotating anvil cylinder 43 and the knife cylinder 44.

At the folding portion 51, the double box sheet S0 is moved in the transport direction Da by the upper transport belt 52 and the lower transport belts 53 and 54, and is moved by the gluing device 56 by the gluing device 56, as shown in FIG. , 326b is coated with glue, and then folded downward by the molding apparatus 55 with the ruled lines 312 and 314 as base points. When this folding progresses to nearly 180 degrees, the folding force becomes stronger, and the glue margin pieces 326a and 326b and the ends of the double box sheet S0 are pressed and brought into close contact with each other, and both ends of the double box sheet S0 are joined to form a corrugated cardboard. It becomes a box connecting body B0. Then, as shown in FIG. 1, the corrugated cardboard box connecting body B0 is conveyed to the counter ejector section 61.

At the counter ejector portion 61, the corrugated cardboard box connecting body B0 is sent to the hopper device 62, and the tip end portion of the transport direction Da hits the front plate and is stacked on the elevator 63 in a state of being shaped by the angle-regulating plate. Then, when a predetermined number of corrugated cardboard boxes B are stacked on the elevator 63, the elevator 63 is lowered, and a predetermined number of corrugated cardboard box connectors B0 are discharged as one batch by the carry-out conveyor 64. Then, a predetermined number of stacked corrugated cardboard box connectors B0 are sent to the dividing device 71 by the conveyor 81.

In the dividing device 71, the plurality of corrugated cardboard box connectors B0 conveyed from the counter ejector unit 61 by the transfer conveyor 81 are supplied to the loading device 72. The carry-in device 72 receives the plurality of stacked corrugated cardboard box joints B0 and supplies them to the cutting device 73. The cutting device 73 cuts the plurality of corrugated cardboard box connectors B0 at the position of the alternate long and short dash line 331 (see FIG. 28) along the width direction Db to divide the corrugated cardboard boxes B0 into front and rear halves to manufacture the corrugated cardboard boxes B1 and B2. The unloading device 74 receives and unloads the corrugated cardboard boxes B1 and B2 divided into two by the cutting device 73.

Here, first, the dividing device 71 in the corrugated cardboard box manufacturing device 10 of the present embodiment will be described in detail. FIG. 2 is a schematic configuration diagram showing the corrugated cardboard box dividing device of the present embodiment, FIG. 3 is a plan view showing the upper conveyor in the corrugated cardboard box dividing device, and FIG. 4 is a lower conveyor in the corrugated cardboard box dividing device. It is a plan view.

As shown in FIGS. 2 to 4, the dividing device 71 includes a loading device 72, a cutting device 73, and a loading device 74. The carry-in device 72, the cutting device 73, and the carry-out device 74 are arranged along the transport direction Da of the corrugated cardboard box connecting body B0 and the corrugated cardboard boxes B (B1, B2). The carry-in device 72 supplies a plurality of stacked corrugated cardboard box connectors B0 to the cutting device 73, and has a carry-in lower conveyor 101 and a carry-in upper conveyor 102. The carry-in lower conveyor 101 and the carry-in upper conveyor 102 are arranged so as to face each other with a predetermined interval in the thickness direction Dc of the corrugated cardboard sheet S. The carry-in lower conveyor 101 and the carry-in upper conveyor 102 have almost the same length in the transport direction Da, but the length of the width direction Db in the carry-in upper conveyor 102 is shorter than the length of the width direction Db in the carry-in lower conveyor 101. It has become.

The carry-in lower conveyor 101 is configured such that an endless conveyor belt 105 is hung between the drive roller 103 and the driven roller 104. The carry-in upper conveyor 102 is configured such that an endless transfer belt 108 is hung between the drive roller 106 and the driven roller 107. Although not shown, in the carry-in lower conveyor 101 and the carry-in upper conveyor 102, a plurality of rollers are arranged between the drive rollers 103 and 106 and the driven rollers 104 and 107, respectively, so that the transport belts 105 and 108 are loosened. Is prevented. The carry-in lower conveyor 101 is provided with a drive motor 109 capable of driving and rotating the drive roller 103. The carry-in conveyor 102 is provided with a drive motor 110 capable of driving and rotating the drive roller 106. Further, the carry-in upper conveyor 102 is supported so as to be vertically movable by the carry-in upper conveyor moving device 111.

The carry-in device 72 has a left side aligning device 112 and a right side aligning device 113. The left side aligning device 112 and the right side aligning device 113 are arranged so as to face each other in the width direction Db. The left side aligning device 112 and the right side aligning device 113 are composed of aligning plates 114 and 115 facing the width direction Db, and drive cylinders 116 and 117 that move the aligning plates 114 and 115 along the width direction Db, respectively. Has been done. The positions of the left side aligning device 112 and the right side aligning device 113 can be adjusted in the width direction Db according to the width dimension of the corrugated cardboard box connecting body B0 to be processed.

The carry-in device 72 has an opening / closing door 118. The opening / closing door 118 has a plate shape arranged along the width direction Db and the thickness direction Dc on the upstream side of the carry-in lower conveyor 101 in the transport direction Da. The opening / closing door 118 can be moved along the thickness direction Dc by the drive cylinder 119, and moves to a closed position located above the carry-in lower conveyor 101 and an open position located below the carry-in lower conveyor 101. Can be done.

The cutting device 73 cuts a plurality of corrugated cardboard box connecting laminating bodies in which a plurality of corrugated cardboard box connecting bodies B0 are stacked in the thickness direction Dc along the width direction Db and divides them into two corrugated cardboard boxes B1 and B2. The cutting device 73 includes an inlet side lower conveyor 121 and an outlet side lower conveyor 122 as a lower conveyor, an inlet side upper conveyor 123 and an outlet side upper conveyor 124 as an upper conveyor, a pressing device 125, a cutting blade 126, and an ascending / descending device 73. It has a device 127 and a positioning device 128.

The inlet-side lower conveyor 121 and the exit-side lower conveyor 122 stack and transport a plurality of corrugated cardboard box connectors B0, and the length of the width direction Db is the same as that of the carry-in lower conveyor 101, and the length of the transport direction Da is the same. Are about half each. The inlet side lower conveyor 121 and the outlet side lower conveyor 122 have the same length in the width direction Db and the same length in the transport direction Da. The inlet side lower conveyor 121 and the outlet side lower conveyor 122 are arranged with a predetermined gap in the transport direction Da.

The inlet-side lower conveyor 121 is configured such that an endless conveyor belt 133 is hung between the driving roller 131 and the driven roller 132. The outlet-side lower conveyor 122 is configured such that an endless conveyor belt 136 is hung between the driving roller 134 and the driven roller 135. Although not shown, the inlet side lower conveyor 121 and the outlet side lower conveyor 122 have a plurality of rollers arranged between the drive rollers 131 and 134 and the driven rollers 132 and 135, respectively, so that the conveyor belts 133 and 136 are arranged. The slack is prevented. The inlet side lower conveyor 121 is provided with a drive motor 137 capable of driving and rotating the drive roller 131. The outlet side lower conveyor 122 is provided with a drive motor 138 capable of driving and rotating the drive roller 134.

The inlet-side upper conveyor 123 and the outlet-side upper conveyor 124 support and convey the upper portions of a plurality of corrugated cardboard box connectors B0 stacked on the inlet-side lower conveyor 121 and the outlet-side lower conveyor 122, and convey the conveyors in the width direction. The length of Db is shorter than that of the lower conveyor 121 on the inlet side and the lower conveyor 122 on the outlet side, and the length of the transport direction Da is also shorter (in the present embodiment, two). The inlet side upper conveyor 123 and the outlet side upper conveyor 124 are arranged with a predetermined gap in the transport direction Da.

The inlet-side upper conveyor 123 is arranged so as to face above the inlet-side lower conveyor 121, and is configured such that an endless conveyor belt 141 is hung between the drive roller 139 and the driven roller 140. The outlet-side upper conveyor 124 is arranged so as to face above the outlet-side lower conveyor 122, and is configured such that an endless conveyor belt 144 is hung between the drive roller 142 and the driven roller 143. In the inlet side upper conveyor 123 and the outlet side upper conveyor 124, two conveyors are arranged side by side at predetermined intervals in the width direction Db. The inlet side upper conveyor 123 and the outlet side upper conveyor 124 on the left side with respect to the transport direction Da are provided with a drive motor 145 capable of driving and rotating the drive rollers 139 and 142, and the inlet on the right side with respect to the transport direction Da. The side upper conveyor 123 and the outlet side upper conveyor 124 are provided with a drive motor 146 capable of driving and rotating the drive rollers 139 and 142, respectively.

The inlet side upper conveyor 123 and the outlet side upper conveyor 124 are supported so as to be vertically movable by the inlet side upper conveyor moving device 147 and the outlet side upper conveyor moving device 148.

The pressing device 125 presses a plurality of corrugated cardboard box connecting bodies B0 stacked on the inlet side lower conveyor 121 and the outlet side lower conveyor 122 from above. The pressing device 125 includes width direction pressing members 149, 150 along the width direction Db above the inlet side lower conveyor 121 and the outlet side lower conveyor 122, and a plurality of transport direction pressing members 151, 152 along the transport direction Da. doing. The width direction pressing member 149 is arranged in the downstream portion of the inlet side upper conveyor 123, and a plurality of transport direction pressing members 151 extend from the width direction pressing member 149 to the upstream side of the transport direction Da. The width direction pressing member 150 is arranged in the upstream portion of the outlet side upper conveyor 124, and a plurality of transport direction pressing members 152 extend from the width direction pressing member 150 to the downstream side of the transport direction Da. The pressing device 125 is supported by a pressing driving device 153 so as to be vertically movable.

The cutting blade 126 is arranged between the inlet side lower conveyor 121 and the outlet side lower conveyor 122 along the width direction Db, and the blade portion is formed along the upper portion. The cutting blade 126 has an endless shape and is supported by being hung on a drive pulley 154 and a driven pulley 155 arranged on both sides in the width direction Db of the inlet side lower conveyor 121. The cutting blade drive device 156 can drive and rotate the drive pulley 154, and the rotation of the drive pulley 154 causes the cutting blade 126 to move in the width direction Db between the inlet side lower conveyor 121 and the outlet side lower conveyor 122. can do. The cutting blade 126 has a cutting position between the inlet side lower conveyor 121 and the outlet side lower conveyor 122, and only moves between the inlet side lower conveyor 121 and the carry-in lower conveyor 101.

The elevating device 127 relatively moves the plurality of corrugated cardboard box connectors B0 on the inlet side lower conveyor 121 and the outlet side lower conveyor 122 and the cutting blade 126 in the vertical direction. In the present embodiment, the elevating device 127 makes the cutting blade 126 immovable in the vertical direction, and presses the inlet side lower conveyor 121 and the outlet side lower conveyor 122, the inlet side upper conveyor 123, and the outlet side upper conveyor 124. The device 125 can be raised and lowered along the vertical direction. The inlet side lower conveyor 121, the outlet side lower conveyor 122, the inlet side upper conveyor 123, the outlet side upper conveyor 124, and the pressing device 125 are supported by the elevating table 157. The elevating drive device 158 can elevate and elevate the elevating table 157 in the vertical direction, and when the elevating table 157 moves up and down, the inlet side lower conveyor 121 and the outlet side lower conveyor 122, the inlet side upper conveyor 123, and the outlet side upper side. The conveyor 124 and the pressing device 125 move up and down. That is, as the lifting platform 157 descends, the plurality of corrugated cardboard box connectors B0 supported by the inlet side lower conveyor 121, the outlet side lower conveyor 122, the inlet side upper conveyor 123, the outlet side upper conveyor 124, and the pressing device 125 As it descends, the plurality of corrugated cardboard box connectors B0 are cut by the cutting blade 126.

The positioning device 128 positions the plurality of corrugated cardboard box connectors B0 supplied on the inlet side lower conveyor 121 and the outlet side lower conveyor 122 in the transport direction Da. The positioning device 128 has two upstream positioning members 161 and two downstream positioning members 162. The upstream-side positioning member 161 is movable along the transport direction Da and the thickness direction Dc of the corrugated cardboard box connector B0 at the upstream portion of the inlet-side lower conveyor 121. The downstream positioning member 162 is movable along the transport direction Da and the thickness direction Dc of the corrugated cardboard box connector B0 at the downstream portion of the outlet side lower conveyor 122. The upstream side positioning member 161 and the downstream side positioning member 162 can be moved independently by the positioning drive device.

The upstream positioning member 161 has a telescopic structure in which the support cylinder 163, the outer cylinder 164, and the inner cylinder 165 are fitted to each other. The first drive device 166 can raise and lower the outer cylinder 164 with respect to the fixed support cylinder 163 along the thickness direction Dc, and the second drive device 167 has the inner cylinder 165 thicker than the outer cylinder 164. It can be raised and lowered along the longitudinal direction Dc. Further, the third drive device 168 can move the support cylinder 163 together with the outer cylinder 164 and the inner cylinder 165 along the transport direction Da. The downstream positioning member 162 has a telescopic structure in which the support cylinder 169, the outer cylinder 170, and the inner cylinder 171 are fitted to each other. The first drive device 172 can raise and lower the outer cylinder 170 with respect to the fixed support cylinder 169 along the thickness direction Dc, and the second drive device 173 has the inner cylinder 171 thicker with respect to the outer cylinder 170. It can be raised and lowered along the longitudinal direction Dc. Further, the third drive device 174 can move the support cylinder 169 together with the outer cylinder 170 and the inner cylinder 171 along the transport direction Da.

Since the upstream positioning member 161 has a telescopic structure in which the support cylinder 163, the outer cylinder 164, and the inner cylinder 165 are fitted to each other, the width of the transport direction Da in the outer cylinder 164 is the transport direction Da in the support cylinder 163. The width of the transport direction Da in the inner cylinder 165 is narrower than the width of the transport direction Da in the outer cylinder 164. Similarly, since the downstream positioning member 162 has a telescopic structure in which the support cylinder 169, the outer cylinder 170, and the inner cylinder 171 are fitted to each other, the width of the transport direction Da in the outer cylinder 170 is the support cylinder. It is narrower than the width of the transport direction Da in 169, and the width of the transport direction Da in the inner cylinder 171 is narrower than the width of the transport direction Da in the outer cylinder 170. Here, the positioning drive device is composed of each drive device 166, 167, 168, 172, 173, 174.

The cutting device 73 has a left side aligning device 175 and a right side aligning device 176. The left side aligning device 175 and the right side aligning device 176 are arranged so as to face each other in the width direction Db. The left side aligning device 175 and the right side aligning device 176 are composed of aligning plates 177 and 178 facing the width direction Db, and drive cylinders 179 and 180 that move the aligning plates 177 and 178 along the width direction Db, respectively. Has been done. In the present embodiment, the left side aligning device 175 is arranged on the side of the inlet side lower conveyor 121 and the exit side lower conveyor 122, and the aligning plate 177 extends below the inlet side lower conveyor 121 and the outlet side lower conveyor 122. Has been done. On the other hand, the right side aligning device 176 is arranged on the inlet side lower conveyor 121 and above the outlet side lower conveyor 122, and the aligning plate 178 extends to the upper surfaces of the inlet side lower conveyor 121 and the exit side lower conveyor 122. .. Therefore, in the left side aligning device 175, no gap is generated between the lower end portion of the aligning plate 177 and the upper surface of the lower conveyors 121 and 122. Therefore, when the aligning plates 177 and 178 move so as to approach each other, A plurality of corrugated cardboard box connecting bodies B0 stacked on the lower conveyors 121 and 122 can be aligned with the aligning plate 177 to properly align the paper in the width direction Db. Further, the right side alignment device 176 can adjust its position in the width direction Db according to the width dimension of the corrugated cardboard box connecting body B0 to be processed.

The unloading device 74 receives the corrugated cardboard boxes B1 and B2 that have been cut by the cutting device 73 and are stacked, and carries them out to the outside, and has a unloading lower conveyor 181 and a unloading upper conveyor 182. The carry-out lower conveyor 181 and the carry-out upper conveyor 182 are arranged so as to face each other with a predetermined interval in the thickness direction Dc of the corrugated cardboard sheet S. The unloading lower conveyor 181 and the unloading upper conveyor 182 have almost the same length in the transporting direction Da, but the length of the width direction Db in the unloading upper conveyor 182 is shorter than the length of the width direction Db in the unloading lower conveyor 181. It has become.

The carry-out lower conveyor 181 is configured such that an endless conveyor belt 185 is hung between the drive roller 183 and the driven roller 184. The carry-out conveyor 182 is configured such that an endless transfer belt 188 is hung between the drive roller 186 and the driven roller 187. Although not shown, in the carry-out lower conveyor 181 and the carry-out upper conveyor 182, the transport belts 185 and 188 are loosened by arranging a plurality of rollers between the drive rollers 183 and 186 and the driven rollers 184 and 187, respectively. Is prevented. The unloading conveyor 181 is provided with a drive motor 189 capable of driving and rotating the drive roller 183. The carry-out conveyor 182 is provided with a drive motor 190 capable of driving and rotating the drive roller 186. Further, the carry-out conveyor 182 is supported so as to be vertically movable by the carry-out conveyor moving device 191.

The cutting device 73 will be described in detail. FIG. 5 is a front schematic view showing a corrugated cardboard box cutting device, and FIG. 6 is a side schematic view showing a corrugated cardboard box cutting device.

As shown in FIGS. 5 and 6, the elevating platform 157 has a beam shape along the horizontal direction, and is a frame in the inlet side lower conveyor 121 and the outlet side lower conveyor 122 via a pair of left and right connecting members 201 and 202. 203, 204, 205, 206 are connected. The elevating drive device 158 is provided on the device frame 207, and the tip end portion of the drive rod 208 is connected to the elevating table 157.

Further, the lifting platform 157 is provided with a pressing drive device 153, and the tip end portion of the drive rod 209 is connected to the support frame 210 of the pressing device 125. The support frame 210 is arranged along the width direction Db, and two mounting frames 211 are fixed on the upstream side in the transport direction Da, and two mounting frames 212 are fixed on the downstream side. The width direction pressing member 149 and the transport direction pressing member 151 are fixed to the lower surface of the mounting frame 211, and the width direction pressing member 150 and the transport direction pressing member 152 are fixed to the lower surface of the mounting frame 212. The left side alignment device 175 and the right side alignment device 176 are supported by the support frame 210, and the alignment plates 177 and 178 hang downward. The alignment plate 178 is movable in the width direction Db.

The inlet side upper conveyor 123 and the outlet side upper conveyor 124 are arranged inside the pressing members 149, 150, 151, 152. In the present embodiment, the inlet side upper conveyor 123 and the outlet side upper conveyor 124 are arranged inside the mounting frames 211 and 212 that support the pressing members 149, 150, 151, 152. The mounting frames 211 and 212 are provided with spaces 213 and 214 that open downward. The inlet-side upper conveyor moving device 147 is fixed to the space portion 213, and the inlet-side upper conveyor 123 is connected to the tip of the drive rod 215. The outlet side upper conveyor moving device 148 is fixed to the space portion 214, and the outlet side upper conveyor 124 is connected to the tip end portion of the drive rod 216.

Therefore, when the elevating drive device 158 is driven, the drive rod 208 expands and contracts, and the elevating table 157 can be moved up and down. The 123, the outlet side upper conveyor 124, and the pressing device 125 can be moved up and down. Further, when the pressing drive device 153 is driven, the drive rod 209 expands and contracts, and the pressing device 125, the inlet side upper conveyor 123, and the outlet side upper conveyor 124 can be moved up and down with respect to the elevating table 157. Further, when the conveyor moving devices 147 and 148 are driven, the drive rods 215 and 216 can be expanded and contracted to move the inlet side upper conveyor 123 and the outlet side upper conveyor 124 up and down with respect to the pressing device 125.

As shown in FIG. 2, the operation of the carry-in device 72, the cutting device 73, and the carry-out device 74 constituting the dividing device 71 can be controlled by the control device 231. The control device 231 can drive and control the drive motors 109 and 110 of the carry-in device 72, the carry-in conveyor moving device 111, and the drive cylinders 116, 117 and 119. The control device 231 includes drive motors 137, 138, 145, 146 of the cutting device 73, conveyor moving devices 147, 148, pressing drive device 153, elevating drive device 158, drive device 166, 167, 168, 172, 173, 174. Drive control is possible. The control device 231 can drive and control the drive motors 189 and 190 of the carry-out device 74 and the carry-out conveyor moving device 191.

Here, the operation control of the upstream side positioning member 161 and the downstream side positioning member 162 constituting the positioning device 128 by the control device 231 will be described. FIG. 7 is a schematic front view showing the cardboard box positioning device, and FIGS. 8 and 9 are schematic views showing the operation of the cardboard box positioning device.

As shown in FIG. 7, in the upstream positioning member 161, the first drive device 166 can raise and lower the outer cylinder 164 with respect to the support cylinder 163, and the second drive device 167 can move up and down with respect to the outer cylinder 164. The inner cylinder 165 can be raised and lowered, and the third drive device 168 can move the support cylinder 163, the outer cylinder 164, and the inner cylinder 165 along the transport direction Da. Here, the first drive device 166 and the second drive device 167 are composed of, for example, an air cylinder, and the third drive device 168 is fixed to the screw shaft 221 and the support cylinder 163 and the screw shaft 221 is screwed. It is composed of a moving body 222 and a motor 223 that drives and rotates a screw shaft 221. Further, in the downstream positioning member 162, the first drive device 172 can raise and lower the outer cylinder 170 with respect to the support cylinder 169, and the second drive device 173 raises and lowers the inner cylinder 171 with respect to the outer cylinder 170. It is possible, and the third drive device 174 can move the support cylinder 169, the outer cylinder 170, and the inner cylinder 171 in the transport direction Da. Here, the first drive device 172 and the second drive device 173 are composed of, for example, an air cylinder, and the third drive device 174 is fixed to the screw shaft 224 and the support cylinder 169, and the screw shaft 224 is screwed. It is composed of a moving body 225 and a motor 226 that drives and rotates a screw shaft 224. The positioning drive device of the present invention is each drive device 166, 167, 168, 172, 173, 174, and the upstream side positioning member 161 and the downstream side positioning member 162 can be moved independently.

That is, the control device 231 drives and controls the first drive device 166, 172 and the second drive device 167, 173 as the elevating table 157 goes up and down, so that the outer cylinders 164 and 170 with respect to the support cylinders 163 and 169. And the inner cylinders 165 and 171 are operated along the thickness direction Dc.

The control device 231 cuts a plurality of corrugated cardboard box joints B0 back and forth by the cutting blade 126, raises the elevating table 157, the upstream positioning member 161 and the downstream positioning member 162, and then drives and controls the third drive device 174. By doing so, the downstream side positioning member 162 is moved to the upstream side in the transport direction Da by a predetermined distance. Specifically, in the control device 231, when the upstream positioning member 161 and the downstream positioning member 162 are in the raised position, the cut corrugated cardboard boxes B1 and B2 are moved downstream by the inlet side lower conveyor 121 and the outlet side lower conveyor 122. While passing below the positioning member 162, the third drive device 174 is driven and controlled to move the downstream positioning member 162 to the upstream side in the transport direction Da by a predetermined distance.

Further, the control device 231 drives and controls the first drive device 172 after the cut corrugated cardboard boxes B1 and B2 pass below the downstream positioning member 162 by the inlet side lower conveyor 121 and the outlet side lower conveyor 122. By lowering the outer cylinder 170 and the inner cylinder 171 and driving and controlling the third drive device 174, the downstream positioning member 162 is moved to the downstream side in the transport direction Da by a predetermined distance.

Here, the downstream positioning member 162 is provided with an arrival detection sensor 232 that detects the arrival of the corrugated cardboard box connector B0 (the tip of the transport direction Da) on the support cylinder 169, and detects the passage of the corrugated cardboard boxes B1 and B2. A passage detection sensor 233 is provided. The arrival detection sensor 232 and the passage detection sensor 233 output the detection result to the control device 231. Therefore, when the arrival detection sensor 232 detects the arrival of the corrugated cardboard box connector B0, the control device 231 stops the operation of the inlet side lower conveyor 121, the outlet side lower conveyor 122, the inlet side upper conveyor 123, and the outlet side upper conveyor 124. do. Further, when the passage detection sensor 233 detects the passage of the corrugated cardboard boxes B1 and B2 below the downstream positioning member 162, the control device 231 starts lowering the outer cylinder 170 and the inner cylinder 171 in the downstream positioning member 162.

That is, when the corrugated cardboard box connector B0 supported by the inlet side lower conveyor 121 and the outlet side lower conveyor 122 is lowered and the corrugated cardboard box connector B0 is cut by the cutting blade 126, the inlet side lower conveyor 121 and the outlet side lower The corrugated cardboard boxes B1 and B2 cut together with the conveyor 122 are raised. At this time, as the inlet side lower conveyor 121 and the outlet side lower conveyor 122 move up and down, the upstream side positioning member 161 and the downstream side positioning member 162 are moved up and down so as to follow. Further, when the upstream positioning member 161 and the downstream positioning member 162 are raised together with the corrugated cardboard boxes B1 and B2, the upstream positioning member 161 is moved upstream in the transport direction Da by a predetermined distance as shown by a two-dot chain line in FIG. Move to the side.

Then, as shown in FIG. 8, after the upstream positioning member 161 and the downstream positioning member 162 are raised, the passage detection sensor 233 detects the passage of the corrugated cardboard boxes B1 and B2 below the downstream positioning member 162. The downstream positioning member 162 shown by the alternate long and short dash line in No. 8 is moved to the upstream side in the transport direction Da by a predetermined distance (for example, the position shown by the solid line in FIG. 8). After that, when the passage detection sensor 233 detects the completion of passage of the corrugated cardboard boxes B1 and B2 below the downstream positioning member 162, the outer cylinder 171 is held inside the outer cylinder 170 as shown in FIG. While lowering the cylinder 170, the downstream positioning member 162 is moved to the downstream side in the transport direction Da by a predetermined distance (for example, the position shown by the alternate long and short dash line in FIG. 9).

By the way, as shown in FIG. 2, the stacking height (stacked number) of the corrugated cardboard box connecting body B0 stacked in the splitting device 71 differs depending on the type of the corrugated cardboard box B to be manufactured, or is manufactured. The number of stacked sheets fluctuates inside. In the pressing device 125, the pressing driving device 153 can raise and lower the width direction pressing members 149,150 and the transport direction pressing members 151, 152. The width direction pressing members 149, 150 and the transport direction pressing members 151, 152 descend to press and support a plurality of corrugated cardboard box connecting bodies B0 stacked on the inlet side lower conveyor 121 and the outlet side lower conveyor 122. At this time, the width direction pressing members 149, 150 and the transport direction pressing members 151, 152 are stopped at a predetermined lowering position (pressing position) to press and support the plurality of corrugated cardboard box connecting bodies B0 with an appropriate pressure. Can be done. However, if the stacking height of the plurality of stacked corrugated cardboard box connecting bodies B0 changes, the pressing positions of the width direction pressing members 149, 150 and the transport direction pressing members 151, 152 change.

Therefore, in the present embodiment, a plurality of corrugated cardboard box connectors B0 in which the width direction pressing members 149, 150 and the transport direction pressing members 151, 152 in the pressing device 125 are stacked on the inlet side lower conveyor 121 and the outlet side lower conveyor 122. The optimum pressing position is set according to the stacking height of the plurality of stacked corrugated cardboard box connecting bodies B0 before pressing and supporting. 10 is a schematic view showing the pressing position setting device of the corrugated cardboard box, FIG. 11 is a front view showing the detailed structure of the loading conveyor, and FIG. 12 is a schematic view of the loading conveyor showing the pressing position detecting operation of the corrugated cardboard box. Is.

As shown in FIG. 10, the pressing position setting device 251 includes a carry-in upper conveyor 102 as a pressing measuring member that presses a plurality of stacked corrugated cardboard box connecting bodies B0 from above, and a carrying-in upper conveyor 102 from the corrugated cardboard box connecting body B0. The height sensor 252 as a height detector that detects the ascending / descending height of the carry-in upper conveyor 102 when the pressing reaction force acting on the loading reaches a preset reference pressing reaction force, and the detection results of the height sensor 252. It has a control device 231 that controls the pressing device 125 based on the above. That is, the control device 231 is based on the ascending / descending height of the carry-in upper conveyor 102 when the pressing reaction force when pressing the plurality of corrugated cardboard box connecting bodies B0 on which the carry-in upper conveyor 102 is stacked reaches the reference pressing reaction force. Controls the pressing device 125.

As shown in FIGS. 10 and 11, in the carry-in upper conveyor 102, the lower frame (lower pressing member) 261 and the upper frame (upper pressing member) 262 are arranged with a predetermined gap in the vertical direction, and the lower frame 261 A drive roller 106 and a driven roller 107a are provided in the upper frame 262, two driven rollers 107b are provided in the upper frame 262, and a conveyor belt 108 is hung around the drive roller 106 and the driven rollers 107a and 107b. The lower frame 261 is fixed so that the pressing piece 263 extends toward the upper frame 262 side on the upstream side and the downstream side in the transport direction Da. On the other hand, in the upper frame 262, an air cylinder 264 as an urging member is fixed to the upstream side and the downstream side of the transport direction Da toward the lower frame 261 side. The internal space of this air cylinder 264 is divided into two chambers R1 and R2 by a piston 265, a drive rod 266 connected to the piston 265 extends toward the lower frame 261 side, and the tip portion is a pressing piece 263. Is connected to.

In the upper frame 262, the lower end portion of the connecting rod 267 along the vertical direction is connected to the intermediate portion in the transport direction Da, and the connecting rod 267 is supported by the frame 268 of the carry-in upper conveyor 102 so as to be vertically movable. In the frame 268, the carry-in upper conveyor moving device 111 is arranged, and the tip end portion of the drive rod is connected to the upper end portion of the connecting rod 267. Therefore, the lower frame 261 and the upper frame 262 of the carry-in upper conveyor 102 can be moved along the vertical direction by the carry-in upper conveyor moving device 111.

An electropneumatic converter 272 as an urging bearing capacity adjusting device is connected to the air cylinder 264. The electropneumatic converter 272 is connected to a lower room R1 and an upper room R2 partitioned in the air cylinder 264, and can be switched by a switching valve 271. The electropneumatic converter 272 is a signal converter that converts an electric signal into an air pressure signal. The control device 231 can adjust the pressures of the chambers R1 and R2 in the air cylinder 264 by controlling the electropneumatic converter 272. That is, when the pressure of the chamber R2 in the air cylinder 264 is adjusted to be high by the electropneumatic transducer 272, the pressing force by which the drive rod 266 presses the pressing piece 263 of the lower frame 261 becomes high. On the other hand, when the pressure of the room R2 in the air cylinder 264 is adjusted to be low by the electropneumatic transducer 272, the drive rod 266 contracts to raise the lower frame 261 via the pressing piece 263 and move it to the upper frame 262 side.

The carry-in conveyor moving device 111 has a drive motor (not shown), and the rotary encoder 273 of the drive motor is connected to the drive motor (not shown). The rotary encoder 273 detects the rotation speed of the drive motor and outputs the detection result to the control device 231 so that the control device 231 can calculate the elevating position of the carry-in upper conveyor 102 (lower frame 261). In the carry-in upper conveyor 102, the detection piece 253 extends upward and is fixed to the lower frame 261, while the height sensor 252 is fixed to the upper frame 262. When the lower frame 261 approaches the upper frame 262, the detection piece 253 of the lower frame 261 rises, and the height sensor 252 can detect the detection piece 253. The height sensor 252 outputs this detection result to the control device 231.

Further, an inlet sensor 274 is provided on the upstream side of the transport direction Da on the carry-in upper conveyor 102. The inlet sensor 274 detects the corrugated cardboard box connector B0 supplied to the carry-in conveyor 102, and outputs the detection result to the control device 231. Further, a carry-in device arrival sensor 275 is provided on the downstream side of the carry-in direction Da on the carry-in upper conveyor 102. The carry-in device arrival sensor 275 detects the corrugated cardboard box connector B0 supplied to the carry-in upper conveyor 102, and outputs the detection result to the control device 231. Further, an arrival detection sensor 232 for detecting the arrival of the corrugated cardboard box connector B0 and a passage detection sensor 233 for detecting the passage of the corrugated cardboard boxes B1 and B2 are provided on the downstream side of the transport direction Da in the pressing device 125. The arrival detection sensor 232 and the passage detection sensor 233 output the detection result to the control device 231.

The control device 231 adjusts the pressure applied to the room R2 of the air cylinder 264 by the electropneumatic converter 272 according to the type of the corrugated cardboard box B to be manufactured. The data of the type of the corrugated cardboard box B to be manufactured is input to the control device 231 from the control device (not shown) of the box making machine 10A. For example, if the reference pressure in the room R2 is set and the cardboard box B is hard (high hardness), the reference pressure in the room R2 is adjusted to increase, and if the cardboard box B is soft (low hardness), the room. Adjust in the direction of lowering the reference pressure in R2. The hardness of the corrugated cardboard box B is determined by the front liner and the back liner constituting the corrugated cardboard sheet S, the thickness and paper quality of the core, the pitch of waves in the core, and the like.

As shown in FIG. 12, the carry-in conveyor 102 is normally in the position shown in FIG. 12 (a) by the two air cylinders 264 (due to the pressure applied to the room R2 by the electropneumatic transducer 272). That is, the lower frame 261 is located below the upper frame 262 by a predetermined distance. Here, when the carry-in upper conveyor 102 is lowered and the corrugated cardboard box connecting body B0 is pressed from above, the pressing reaction force from the corrugated cardboard box connecting body B0 becomes large at a predetermined lowering position. When this pressing reaction force reaches the reference pressing reaction force, the pressing piece 263 (see FIG. 11) of the lower frame 261 presses the drive rod 266 of the air cylinder 264, and the air cylinder 264 contracts, so that the lower frame contracts. 261 approaches the upper frame 262. At this time, as shown in FIG. 12B, the detection piece 253 of the lower frame 261 rises, and the height sensor 252 can detect the detection piece 253. A height Hb is secured between the normal position of the lower frame 261 shown in FIG. 12 (a) and the detection position of the lower frame 261 shown in FIG. 12 (b).

Further, even after the height sensor 252 detects the detection piece 253, if the carry-in conveyor 102 is lowered to press the corrugated cardboard box connecting body B0, the pressing reaction force from the corrugated cardboard box connecting body B0 becomes even larger. .. At this time, as shown in FIG. 12 (c), the height sensor 252 can continue to detect the detection piece 253. A height Ht is secured between the detection position of the lower frame 261 shown in FIG. 12 (b) and the uppermost position of the lower frame 261 shown in FIG. 12 (c).

The above-mentioned reference pressing reaction force is set by the pressure applied to the room R2 of the air cylinder 264 adjusted by the electropneumatic converter 272. As described above, the reference pressure in the room R1 is set and adjusted according to the hardness of the cardboard box B. The reference pressing reaction force is, in other words, a pressure at which a plurality of carry-in conveyors 102 (pressing device 125) press and hold the corrugated cardboard box connecting body B0, and if this pressing force is too low, the corrugated cardboard box at the time of cutting. The connecting body B0 is displaced in the horizontal direction, and the cutting accuracy of each corrugated cardboard box connecting body B0 is lowered. On the other hand, if the pressing force is too high, the corrugated cardboard box connecting bodies B0 are in close contact with each other too tightly, and the cutting blade 126 cannot cut the corrugated cardboard box and stops. It is desirable to obtain the optimum pressing force (reference pressing reaction force) by conducting a preliminary experiment or the like.

Here, a method of setting the pressing position by the pressing position setting device 251 will be described. FIG. 13 is a flowchart showing a method of setting a pressing position of a corrugated cardboard box, FIG. 14 is a schematic view of a carry-in conveyor showing a pressing position setting operation of a corrugated cardboard box, and FIG. FIG. 16 is a schematic view of a carry-in upper conveyor showing an operation, and FIG. 16 is a schematic view of a carry-in upper conveyor showing a pressing position setting operation of a corrugated cardboard box having a high stacking height.

In the pressing position setting method by the pressing position setting device 251, as shown in FIGS. 10 and 13, in step S11, the control device 231 detects (ON) the cardboard box connector B0 by the loading device arrival sensor 275. Determine if it is present. Here, if it is determined (Yes) that the carry-in device arrival sensor 275 has detected the corrugated cardboard box connector B0, this process is repeated. On the other hand, if it is determined (No) that the carry-in device arrival sensor 275 does not detect the corrugated cardboard box connector B0, the drive cylinder 119 moves the open / close door 118 from the closed position to the open position in step S12, and proceeds to step S13. Then, the carry-in device 72 is operated to carry the corrugated cardboard box connector B0 onto the carry-in lower conveyor 101.

As shown in FIGS. 10, 13, and 14 (a), in step S14, when the inlet sensor 274 is turned on, it is detected that the corrugated cardboard box connector B0 has been carried in. Here, if it is determined (No) that the entrance sensor 274 has not detected the corrugated cardboard box connector B0, this process is continued, while if it is determined (Yes) that the inlet sensor 274 has detected the corrugated cardboard box connector B0, it is determined. In step S15, the air cylinder 264 is controlled by the electropneumatic converter 272 to lower the lower frame 261 of the carry-in upper conveyor 102. Then, the plurality of stacked corrugated cardboard box connecting bodies B0 are carried in while being sandwiched between the carry-in lower conveyor 101 and the carry-in upper conveyor 102.

In step S16, it is determined whether or not the inlet sensor 274 has passed (OFF) the inlet of the carry-in device 72 of the corrugated cardboard box connector B0. Here, if it is determined (No) that the entrance sensor 274 has detected the corrugated cardboard box connector B0, this process is continued, while it is determined that the inlet sensor 274 has not detected the corrugated cardboard box connector B0 (Yes). Then, in step S17, the opening / closing door 118 is moved from the open position to the closed position by the drive cylinder 119. Then, in step S18, it is determined whether or not the carry-in device arrival sensor 275 has detected (ON) the corrugated cardboard box connector B0. Here, if it is determined (No) that the carry-in device arrival sensor 275 has not detected the corrugated cardboard box connector B0, this process is repeated. On the other hand, when it is determined (Yes) that the loading device arrival sensor 275 has detected the corrugated cardboard box connecting body B0, the operation of the loading device 72 is stopped and the cardboard box connecting body B0 is stopped on the loading conveyor 101 in step S19. Let me.

Then, as shown in FIGS. 10, 13, and 14 (b), by controlling the air cylinder 264 in step S20, the lower frame 261 of the carry-in upper conveyor 102 is raised, and in step S21, each of them is raised. After operating the aligning devices 112 and 113 to align the plurality of corrugated cardboard box connectors B0 stacked on the carry-in lower conveyor 101 in the width direction, the air cylinder 264 is controlled again to lower the carry-in upper conveyor 102. Lower the frame 261. In step S22, it is determined whether or not the height sensor 252 has detected (ON) the detection piece 253. Here, if it is determined (No) that the height sensor 252 has not detected the detection piece 253, as shown in FIGS. 10, 13, and 14 (c), in step S23, the carry-in conveyor moving device 111 As a result, the carry-in upper conveyor 102 is lowered. At this time, the electro-pneumatic transducer 272 supplies the air of the reference pressure instructed by the control device 231 to the room R2 of the air cylinder 264. In step S24, it is determined again whether or not the height sensor 252 has detected (ON) the detection piece 253. Here, if it is determined (No) that the height sensor 252 has not detected the detection piece 253, this process is continued.

On the other hand, as shown in FIGS. 10 and 13 and 14 (d), when it is determined (Yes) that the height sensor 252 has detected the detection piece 253, the carry-in conveyor 102 is moved up and down (down) in step S25. To stop. That is, when the lower frame 261 presses the cardboard box connecting body B0 on the carrying-in lower conveyor 101 from above by lowering the carry-in upper conveyor 102, the lower frame 261 presses the cardboard box connecting body B0. That is, the pressing reaction force that the lower frame 261 receives from the corrugated cardboard box connecting body B0 increases. Then, the pressing reaction force acting on the lower frame 261 from the corrugated cardboard box connecting body B0 at a predetermined lowering position of the lower frame 261 reaches the reference pressing reaction force. Then, in the carry-in upper conveyor 102, the lower frame 261 rises so as to contract the air cylinder 264 with respect to the upper frame 262, and the height sensor 252 of the upper frame 262 detects the detection piece 253 of the lower frame 261. Here, the lowering of the carry-in upper conveyor 102 is stopped.

The operation shown in FIG. 14 is an operation when the hardness of the corrugated cardboard box connecting body B0 is relatively high or when the stacking height of the corrugated cardboard box connecting body B0 is standard. In addition, the pressing reaction force acting on the lower frame 261 from the corrugated cardboard box connecting body B0 reaches the reference pressing reaction force, and the height sensor 252 detects the detection piece 253 to stop the lowering of the carry-in upper conveyor 102. There is. On the other hand, the operation shown in FIG. 15 is an operation when the hardness of the corrugated cardboard box connecting body B0 is relatively low, and the operations from FIGS. 15 (a) to 15 (c) are operations from FIGS. 14 (a) to 14 (14). It is the same as the operation up to (c). However, as shown in FIG. 15D, since the hardness of the corrugated cardboard box connecting body B0 is low or the stacking height is low, the amount of descent of the carry-in upper conveyor 102 is large, and the carry-in upper conveyor 102 is greatly lowered. After that, the pressing reaction force acting on the lower frame 261 from the corrugated cardboard box connecting body B0 reaches the reference pressing reaction force, and the height sensor 252 detects the detection piece 253 to stop the lowering of the carry-in upper conveyor 102. ..

Further, when it is determined (Yes) that the height sensor 252 has detected the detection piece 253 in step S22, the carry-in conveyor 102 is raised in step S26 as shown in FIGS. 10, 13, and 16. .. In step S27, the height sensor 252 determines whether or not the detection of the detection piece 253 is completed (OFF). Here, if it is determined (No) that the height sensor 252 detects the detection piece 253, this process is continued.

On the other hand, when it is determined (Yes) that the height sensor 252 has finished detecting the detection piece 253, the ascending / descending (elevating) of the carry-in upper conveyor 102 is stopped in step S25. That is, as shown in FIGS. 13 and 16 (a) to 16 (c), when a plurality of corrugated cardboard box connecting bodies B0 stacked on the carry-in lower conveyor 101 are carried in, the stacked height of the corrugated cardboard box connecting bodies B0 If the height is high, at this time, the pressing reaction force acting on the lower frame 261 from the corrugated cardboard box connecting body B0 reaches the reference pressing reaction force, and the height sensor 252 detects (ON) the detection piece 253. Therefore, in step S19, the operation of the carry-in device 72 is stopped to stop the corrugated cardboard box connector B0 on the carry-in lower conveyor 101, and then in step S20, the air cylinder 264 is controlled to control the carry-in upper conveyor. The lower frame 261 of 102 is raised, and in step S21, the aligning devices 112 and 113 are operated to align the plurality of corrugated cardboard box connectors B0 stacked on the carry-in lower conveyor 101 in the width direction, and then air is again applied. By controlling the cylinder 264, the lower frame 261 of the carry-in upper conveyor 102 is lowered.

As shown in FIG. 16D, when the carry-in upper conveyor 102 is raised in a state where the height sensor 252 detects the detection piece 253, the lower frame 261 presses the upper part of the cardboard box connector B0 on the carry-in lower conveyor 101. The pressing force to be pressed, that is, the pressing reaction force received by the lower frame 261 from the corrugated cardboard box connecting body B0 is reduced. Then, the pressing reaction force acting on the lower frame 261 from the corrugated cardboard box connecting body B0 at a predetermined rising position of the lower frame 261 is lower than the reference pressing reaction force. Then, in the carry-in upper conveyor 102, the lower frame 261 is lowered so as to extend the air cylinder 264 with respect to the upper frame 262, and the height sensor 252 of the upper frame 262 does not detect the detection piece 253 of the lower frame 261. Here, the ascending of the carry-in conveyor 102 is stopped.

Returning to FIGS. 10 and 13, in step S28, the control device 231 stores the height of the lower frame 261 when the ascending / descending of the carry-in upper conveyor 102 is stopped. In this case, the carry-in upper conveyor 102 is moved up and down by the carry-in upper conveyor moving device 111, and the rotary encoder 273 detects the rotation speed of the drive motor of the carry-in upper conveyor moving device 111 and outputs it to the control device 231. There is. Therefore, the control device 231 calculates the elevating position of the carry-in upper conveyor 102 (lower frame 261) based on the detection result of the rotary encoder 273. In step S29, the control device 231 calculates the pressing height of each pressing member 149, 150, 151, 152 in the pressing device 125 based on the elevating position of the carry-in upper conveyor 102 (lower frame 261). In the present embodiment, since the height of the carry-in lower conveyor 101 is the same as the height of the inlet side lower conveyor 121 and the outlet side lower conveyor 122, the control device 231 is the lower frame at the stored up / down position of the carry-in upper conveyor 102. The pressing drive device 153 is controlled so that the height of the lower surface of 261 and the height of the lower surface of each of the pressing members 149, 150, 151, 152 are the same.

After that, as shown in FIGS. 10 and 13, FIG. 14 (e), FIG. 15 (e), and FIG. 16 (e), by operating the loading device 72 in step S30, a plurality of stacked corrugated cardboard boxes The connector B0 is supplied to the cutting device 73.

Next, the operation of the dividing device 71 in the corrugated cardboard box manufacturing device 10 of the present embodiment will be described in detail. 17 is a time chart showing the operation of the corrugated cardboard box dividing device, FIG. 18 is a schematic view showing a carry-in state of the corrugated cardboard box connector, FIG. 19 is a schematic view showing a retracted state of the upper conveyor, and FIG. 20 is a schematic view showing a retracted state of the upper conveyor. A schematic view showing a positioning state by a positioning member, FIG. 21 is a schematic view showing a pressing state by a pressing device, FIG. 22 is a schematic view showing a cutting state by lowering a corrugated cardboard box connector, and FIG. 23 is an ascending view of the corrugated cardboard box. FIG. 24 is a schematic view showing a state, FIG. 24 is a schematic view showing a support state of the upper conveyor, FIG. 25 is a schematic view showing a moving state of a downstream positioning member, and FIG. 26 is a schematic view showing a cardboard box being carried out. FIG. 27 is a schematic view showing a carry-out state of the corrugated cardboard box and a carry-in state of the corrugated cardboard box connector.

As shown in FIGS. 2 and 17, the cut corrugated cardboard boxes B1 and B2 are carried out until the time t5. When this unloading is completed, the unloading lower conveyor 181 and the unloading upper conveyor 182 in the unloading device 74 stop the drive rotation of each of the drive motors 189 and 190 at time t5, and completely stop at time t6. The arrival detection sensor 232 is turned off from time t2 to t3, and the passage detection sensor 233 is turned off from time t3 to t4.

At time t1, the carry-in lower conveyor 101 and the carry-in upper conveyor 102 in the carry-in device 72 start operation by the drive rotation of the drive motors 109 and 110, respectively. Further, the inlet side lower conveyor 121 and the outlet side lower conveyor 122, the inlet side upper conveyor 123, and the outlet side upper conveyor 124 in the cutting device 73 are operated by the drive rotation of the drive motors 137, 138, 145, and 146, respectively. Therefore, the corrugated cardboard box connector B0 is carried in by the carry-in device 72 and supplied to the cutting device 73. Further, the first drive device 172 is driven from time t4 to t5, descends while holding the inner cylinder 171 inside the outer cylinder 170 of the downstream positioning member 162, and is lowered from time t4 to t6. The 174 is driven, the downstream positioning member 162 moves to the downstream side in the transport direction Da, and stops at the paper alignment position.

As shown in FIGS. 17 and 18, when the corrugated cardboard box connector B0 is supplied to a predetermined cutting position in the cutting device 73, the arrival detection sensor 232 detects the tip of the corrugated cardboard box connector B0, and the time t6 to t7 It turns on. Then, the carry-in lower conveyor 101 and the carry-in upper conveyor 102 in the carry-in device 72 stop operating from time t7 to t8. Further, the inlet side lower conveyor 121 and the outlet side lower conveyor 122, the inlet side upper conveyor 123, and the outlet side upper conveyor 124 in the cutting device 73 stop operating from time t8 to t9.

When the cardboard box connector B0 stops at a predetermined cutting position in the cutting device 73, as shown in FIGS. 17 and 19, the inlet side upper conveyor 123 and the outlet side upper conveyor 124 rise from time t10 to t11, and the cardboard box is connected. Release the support of the upper part of the box connecting body B0. Further, the upstream positioning member 161 descends from time t10 to t11 while holding the inner cylinder 165 inside the outer cylinder 164. Here, as shown in FIGS. 17 and 20, the left side aligning device 175 and the right side aligning device 176 operate (paper alignment execution) from time t11 to t12, and the inlet side lower conveyor 121 and the exit side lower conveyor 122 Paper alignment in the width direction Db in the plurality of corrugated cardboard box connecting bodies B0 stacked on the top is performed. Further, in the upstream positioning member 161, the outer cylinder 164 moves to the downstream side in the transport direction Da from time t13 to t14, and together with the outer cylinder 170 of the downstream positioning member 162, is on the inlet side lower conveyor 121 and the outlet side lower conveyor 122. The papers in the transport direction Da in the plurality of corrugated cardboard box connecting bodies B0 stacked in the above are aligned.

Then, as shown in FIGS. 17 and 21, the upstream positioning member 161 and the downstream positioning member 162 apply a downward stress to each of the inner cylinders 165 and 171 from time t16 to t17. The pressing device 125 lowers the width direction pressing members 149, 150 and the transport direction pressing members 151, 152 from t15 to t16, so that a plurality of the pressing devices 125 are stacked on the inlet side lower conveyor 121 and the outlet side lower conveyor 122. Press and support the cardboard box connector B0. At this time, the control device 231 calculates and stores the appropriate pressing height of the plurality of stacked corrugated cardboard box connecting bodies B0 in advance by the carrying-in device 72, and the pressing driving device 153 calculates and stores the appropriate pressing members 149, respectively. The 150, 151, 152 are lowered to an appropriate pressing height to press and support the plurality of corrugated cardboard box connectors B0.

The plurality of corrugated cardboard box connectors B0 stacked on the inlet side lower conveyor 121 and the outlet side lower conveyor 122 include the left side alignment device 175 and the right side alignment device 176, and the upstream side positioning member 161 and the downstream side positioning member 162. When supported by the width direction pressing members 149,150 and the transport direction pressing members 151,152, as shown in FIGS. 17 and 22, the elevating device 127 operates from time t16 to t17 to connect a plurality of corrugated cardboard boxes. Descend body B0. Then, the cutting blade 126 is relatively raised by the lowering operation of the plurality of corrugated cardboard box connecting bodies B0, and the plurality of corrugated cardboard box connecting bodies B0 are cut along the width direction Db to form the plurality of corrugated cardboard boxes B1 and B2. .. When the plurality of corrugated cardboard box connecting bodies B0 are lowered, the upstream positioning member 161 and the downstream positioning member 162 are provided with a plurality of inner cylinders 165, 171 having a width narrower than the outer cylinders 164 and 170. A gap is secured between the cardboard box and the connecting body B0. When the plurality of corrugated cardboard boxes B0 are cut by the cutting blade 126, the plurality of corrugated cardboard boxes B1 can move slightly toward the downstream side in the transport direction Da within the gap, and the plurality of corrugated cardboard boxes B2 can move slightly within the gap toward the upstream side in the transport direction Da.

When the plurality of corrugated cardboard box connectors B0 are cut into the plurality of corrugated cardboard boxes B1 and B2, the elevating device 127 operates from time t17 to t20 as shown in FIGS. 17 and 23, and the plurality of corrugated cardboard boxes B1 and B1 Raise B2. At this time, the left side alignment device 175 and the right side alignment device 176 operate (paper alignment is released) from time t17 to t18, and move to a standby position away from the corrugated cardboard boxes B1 and B2. Further, the upstream positioning member 161 and the downstream positioning member 162 rise from time t17 to t20. The upstream-side positioning member 161 moves to the upstream side in the transport direction Da from time t17 to t21.

Further, when the plurality of corrugated cardboard boxes B1 and B2 are raised, as shown in FIGS. 17 and 24, the pressing device 125 takes the width direction pressing members 149,150 and the transport direction pressing members 151,152 from time t18 to t21. By raising the above, the pressing support of the plurality of corrugated cardboard boxes B1 and B2 stacked on the inlet side lower conveyor 121 and the outlet side lower conveyor 122 is released. On the other hand, the inlet side upper conveyor 123 and the outlet side upper conveyor 124 descend from time t18 to t19 to support the upper parts of the corrugated cardboard boxes B1 and B2. Further, as shown in FIGS. 17 and 25, at time t21, the unloading lower conveyor 181 and the unloading upper conveyor 182, the inlet side lower conveyor 121, the outlet side lower conveyor 122, the inlet side upper conveyor 123, and the outlet The side upper conveyor 124 starts operation. The downstream positioning member 162 moves to the standby position on the upstream side in the transport direction Da from time t22 to t23. The passage detection sensor 233 detects the tip of the corrugated cardboard box B1 that has started to be carried out, and turns ON from time t21 to t22.

Then, as shown in FIGS. 17 and 26, the plurality of cardboard boxes B1 and B2 are transferred from the cutting device 73 to the unloading device 74, and as shown in FIGS. 17 and 27, the plurality of cardboard boxes B1 are transferred by the unloading device 74. , B2 is carried out. After that, the downstream positioning member 162 is lowered.

As described above, in the corrugated cardboard box dividing device of the present embodiment, the lower conveyors 121 and 122 that stack and convey the plurality of corrugated cardboard box connecting bodies B0 and the plurality of corrugated cardboard boxes that are stacked on the lower conveyors 121 and 122 are connected. A pressing device 125 that presses the body B0 from above, and a cutting blade that divides a plurality of corrugated cardboard box connecting bodies B0 arranged along the width direction Db of the corrugated cardboard box connecting body B0 and stacked on the lower conveyors 121 and 122 back and forth. A plurality of stacks of a lifting device 127 for moving the 126, a plurality of corrugated cardboard box connecting bodies B0 on the lower conveyors 121 and 122, and a cutting blade 126 relative to each other in the vertical direction, and a carry-in upper conveyor (pressing measuring member) 102. A control device 231 that controls the pressing device 125 based on the ascending / descending height of the carry-in upper conveyor 102 when the pressing reaction force when the corrugated cardboard box connector B0 is pressed reaches a preset reference pressing reaction force. It is provided.

Therefore, the plurality of stacked corrugated cardboard box joints B0 are mounted on the lower conveyors 121 and 122 and conveyed, and are pressed from above by the pressing device 125 at a predetermined cutting position stopped on the lower conveyors 121 and 122. Then, the plurality of corrugated cardboard box connecting bodies B0 and the cutting blade 126 move relative to each other by the elevating device 127, so that the plurality of stacked corrugated cardboard box connecting bodies B0 are cut and divided by the cutting blade 126. At this time, the control device 231 presses the plurality of corrugated cardboard box joints B0 on which the carry-in upper conveyors 102 are stacked in advance, and the carry-in upper conveyor 102 when the pressing reaction force at this time reaches the reference pressing reaction force. The pressing device 125 is controlled based on the ascending / descending height of the carry-in upper conveyor 102, and a plurality of corrugated cardboard box joints B0 are pressed with an appropriate pressure. As a result, by holding the corrugated cardboard box connecting body B0 at an appropriate pressure when cutting the corrugated cardboard box connecting body B0, it is possible to stably cut the corrugated cardboard box connecting body B0 and improve the manufacturing accuracy.

In the corrugated cardboard box dividing device of the present embodiment, the ascending / descending height of the carry-in upper conveyor 102 when the pressing reaction force acting on the carrying-in upper conveyor 102 from the stacked corrugated cardboard box connecting bodies B0 reaches the reference pressing reaction force. The height sensor 252 for detecting the above is provided, and the control device 231 controls the pressing device 125 based on the detection result of the height sensor 252. Therefore, the height sensor 252 can detect with high accuracy the ascending / descending height of the carry-in upper conveyor 102 when the pressing reaction force acting on the carry-in upper conveyor 102 from the corrugated cardboard box connecting body B0 reaches the reference pressing reaction force. Therefore, the corrugated cardboard box connecting body B0 can be held at an appropriate pressure when the corrugated cardboard box connecting body B0 is cut.

In the corrugated cardboard box dividing device of the present embodiment, as the pressing device 125, the pressing members 149, 150, 151, 152 that are vertically supported and the pressing drive device 153 that raises and lowers the pressing members 149, 150, 151, 152 are provided. The control device 231 is provided with the pressing members 149, 150, 151 by the pressing drive device 153 based on the ascending / descending height of the carry-in upper conveyor 102 when the pressing reaction force from the corrugated cardboard box connecting body B0 reaches the reference pressing reaction force. , 152 Adjust the pressing position. Therefore, when the corrugated cardboard box connecting body B0 is cut, the corrugated cardboard box connecting body B0 can be held at an appropriate pressure by the pressing members 149, 150, 151, 152.

In the corrugated cardboard box dividing device of the present embodiment, the carry-in lower conveyor 101 is arranged upstream of the transport direction Da of the corrugated cardboard box connector B0 from the lower conveyors 121 and 122, and the carry-in lower conveyor 101 is placed facing above the carry-in lower conveyor 101. A conveyor 102 is arranged, and the carry-in upper conveyor 102 is used as a pressure measuring member. Therefore, before the cutting blade 126 of the cutting device 73 cuts the corrugated cardboard box connecting body B0, the carrying-in device 72 can determine an appropriate pressing position of the corrugated cardboard box connecting body B0 by the pressing device 125, and the corrugated cardboard box connecting body B0 The cutting work can be performed quickly.

In the corrugated cardboard box dividing device of the present embodiment, the carry-in upper conveyor 102 as a pressure measuring member has an air cylinder (attached) while allowing the lower frame (lower pressing member) 261 and the upper frame (upper pressing member) 262 to approach and separate from each other. The upper frame 262 is configured to be urged and supported in a direction separated by the force member) 264, and the upper frame 262 can be moved along the vertical direction by the carry-in upper conveyor moving device (pressing member moving device) 111, and the control device 231 is a corrugated cardboard box. The pressing device 125 is controlled based on the ascending / descending height of the lower frame 261 when the pressing reaction force acting on the lower frame 261 from the connecting body B0 reaches the reference pressing reaction force. Therefore, by lowering the lower frame 261 and the upper frame 262 by the carry-in upper conveyor moving device 111, the plurality of stacked corrugated cardboard box connecting bodies B0 are pressed by the lower frame 261, and at this time, the lower frame 261 presses the air cylinder 264. It moves to the upper frame 262 side against the urging bearing force of, and the pressing reaction force reaches the reference pressing reaction force, and the pressing reaction force easily reaches the reference pressing reaction force by the movement of the lower frame 261. This can be detected and the structure can be simplified.

In the corrugated cardboard box dividing device of the present embodiment, an air cylinder (fluid pressure cylinder) 264 is provided as an urging member so that the lower frame 261 can be raised and lowered with respect to the upper frame 262 and the lower frame with respect to the upper frame 262. It supports 261 downwardly. Therefore, the air cylinder 264 can function as an elevating device for the lower frame 261 and also as a device for detecting a pressing reaction force. By providing the urging member with a plurality of functions, the device can be made compact. Can be achieved.

In the corrugated cardboard box partitioning device of the present embodiment, an electropneumatic converter 272 is provided as an urging bearing force adjusting device for adjusting the urging bearing force of the lower frame 261 by the air cylinder 264. Therefore, since the urging bearing force of the lower frame 261 by the air cylinder 264 is adjusted by the electropneumatic converter 272, the reference pressing reaction force can be adjusted according to the type of the corrugated cardboard box connecting body B0, and the corrugated cardboard box connecting. Regardless of the type of body B0, an appropriate pressing position of the corrugated cardboard box connecting body B0 by the pressing device 125 can be obtained.

In the corrugated cardboard box dividing device of the present embodiment, when the corrugated cardboard box connecting body B0 is carried into the carrying-in lower conveyor 101, the control device 231 exerts a pressing reaction force acting on the carrying-in upper conveyor 102 from the corrugated cardboard box connecting body B0. If the reference pressing reaction force is not reached, the carry-in upper conveyor 102 is lowered, and the pressing reaction force acting on the carry-in upper conveyor 102 from the corrugated cardboard box connector B0 is based on the ascending / descending height when the reference pressing reaction force is reached. Controls the pressing device 125. Therefore, when the height of the corrugated cardboard box connecting body B0 carried into the carrying-in lower conveyor 101 is low, the carrying-in upper conveyor 102 is lowered to press the corrugated cardboard box connecting body B0, and the pressing reaction force acting on the carrying-in upper conveyor 102 is generated. Since the pressing device 125 is controlled based on the ascending / descending height when the reference pressing reaction force is reached, the corrugated cardboard box connecting body B0 is properly pressed by the pressing device 125 even when the height of the corrugated cardboard box connecting body B0 is low. The position can be determined.

In the corrugated cardboard box dividing device of the present embodiment, when the corrugated cardboard box connecting body B0 is carried into the carrying-in lower conveyor 101, the control device 231 exerts a pressing reaction force acting on the carrying-in upper conveyor 102 from the corrugated cardboard box connecting body B0. If the reference pressing reaction force is reached, the carry-in upper conveyor 102 is raised, and the pressing reaction force acting on the carry-in upper conveyor 102 from the corrugated cardboard box connector B0 is based on the ascending / descending height when it is reduced from the reference pressing reaction force. Controls the pressing device 125. Therefore, when the height of the corrugated cardboard box connecting body B0 carried into the carrying-in lower conveyor 101 is high, the carrying-in upper conveyor 102 is raised and separated from the corrugated cardboard box connecting body B0, and the pressing reaction force acting on the carrying-in upper conveyor 102 is applied. Since the pressing device 125 is controlled based on the ascending / descending height when it is lower than the reference pressing reaction force, the corrugated cardboard box connecting body B0 is properly pressed by the pressing device 125 even when the height of the corrugated cardboard box connecting body B0 is high. The position can be determined.

In the corrugated cardboard box dividing device of the present embodiment, the pressure measuring member is a carry-in upper conveyor 102 arranged so as to face above the carry-in lower conveyor 101. Therefore, it is not necessary to separately prepare the pressure measuring member, and the complexity of the structure can be suppressed.

Further, in the corrugated cardboard box manufacturing apparatus of the present embodiment, the paper feeding unit 11 that supplies the double box sheet S0 and the paper discharge that performs the rule line processing and the grooving processing on the surface of the double box sheet S0. The folding portion 51 forming the corrugated cardboard box connecting body B0 by folding the double box sheet S0 and joining the ends, and the corrugated cardboard box connecting body B0 are counted and stacked, and then discharged at predetermined numbers. A counter ejector portion 61 and a dividing device 71 that cuts and divides the corrugated cardboard box connecting body B0 along the width direction Db intersecting the transport direction Da are provided.

Therefore, the double box sheet S0 from the paper feed section 11 is subjected to ruled line processing and grooving processing at the paper ejection section 31, and folded at the folding section 51 to join the ends to form the corrugated cardboard box connecting body B0. Then, the boxes are stacked while being counted by the counter ejector unit 61, and cut by the dividing device 71 to manufacture the corrugated cardboard boxes B1 and B2. At this time, the control device 231 presses the plurality of corrugated cardboard box joints B0 on which the carry-in upper conveyors 102 are stacked in advance, and the carry-in upper conveyor 102 when the pressing reaction force at this time reaches the reference pressing reaction force. The pressing device 125 is controlled based on the ascending / descending height of the carry-in upper conveyor 102, and a plurality of corrugated cardboard box joints B0 are pressed with an appropriate pressure. As a result, by holding the corrugated cardboard box connecting body B0 at an appropriate pressure when cutting the corrugated cardboard box connecting body B0, it is possible to stably cut the corrugated cardboard box connecting body B0 and improve the manufacturing accuracy.

The corrugated cardboard box dividing device of the present invention is not limited to the above-described embodiment. FIG. 29 is a schematic configuration diagram showing a carry-in side in the corrugated cardboard box partitioning device of another embodiment. The basic configuration of the other embodiments is the same as that of the above-described embodiment, and will be described with reference to FIG. 2. Members having the same functions as those of the above-described embodiment are designated by the same reference numerals. Detailed description will be omitted.

In the corrugated cardboard box manufacturing apparatus of another embodiment, as shown in FIG. 2, the dividing device 71 includes a loading device 72, a cutting device 73, and a unloading device 74. Here, the carry-in device 72, the cutting device 73, and the carry-out device 74 are substantially the same as those in the above-described embodiment. In the dividing device 71, a transport conveyor (cardboard box connected body transport conveyor) 81 is arranged on the upstream side in the transport direction Da from the carry-in device 72. The conveyor 81 supplies the plurality of corrugated cardboard box connectors B0 discharged from the counter ejector section 61 (see FIG. 1) to the carry-in device 72.

As shown in FIG. 29, the carry-in device 72 has a carry-in lower conveyor 101 and a carry-in upper conveyor 102, and the carry-in upper conveyor 102 is supported by the carry-in upper conveyor moving device 111 so as to be movable up and down. The conveyor 81 is provided with a height sensor (connector height detector) 281 that detects the height of a plurality of corrugated cardboard box connectors B0 stacked on the conveyor 81. The height sensor 281 is, for example, a laser sensor. The control device 231 controls the carry-in conveyor moving device 111 based on the detection result of the height sensor 281.

That is, in the carry-in upper conveyor 102, a drive roller 106 and a plurality of driven rollers 107a and 107b are provided on the lower frame 261 and the upper frame 262, and the transport belt 108 is hung around the drive roller 106 and each of the driven rollers 107a and 107b. It is configured. At this time, it is desirable that the angle α of the transport belt 108 on the carry-in side of the carry-in upper conveyor 102 is set to, for example, 45 degrees or less. The angle α of the transport belt 108 on the carry-in side is an angle of the transport belt 108 between the drive roller 106 and the driven roller 107b with respect to the horizontal direction.

Since the plurality of corrugated cardboard box connectors B0 on the conveyor 81 are simply stacked, the stacking height differs depending on the thickness of the material and the like. Therefore, the height sensor 281 detects the height of the plurality of corrugated cardboard box connecting bodies B0 on the conveyor 81, and the control device 231 carries in based on the heights of the plurality of corrugated cardboard box connecting bodies B0 on the conveyor 81. The height of the carry-in upper conveyor 102 is adjusted by the upper conveyor moving device 111. The height of the carry-in upper conveyor 102 so that the uppermost position of the plurality of cardboard box joints B0 on the transfer conveyor 81 is the position of the transfer belt 108 between the drive roller 106 and the driven roller 107b on the carry-in upper conveyor 102. It is desirable to adjust the weight.

Further, as shown in FIG. 2, in the control device 231, the pressing device 125 presses a plurality of corrugated cardboard box connecting bodies B0 on which the carry-in upper conveyor 102 is stacked, and the pressing reaction force at this time reaches the reference pressing reaction force. The ascending / descending height of the carry-in upper conveyor 102 is obtained, and the pressing device 125 is controlled based on the ascending / descending height of the carry-in upper conveyor 102 to set an appropriate pressing force of the plurality of corrugated cardboard box connecting bodies B0. .. Then, the control device 231 lowers the plurality of corrugated cardboard box connectors B0 on the inlet side lower conveyor 121 and the outlet side lower conveyor 122 with respect to the cutting blade 126 by the elevating device 127, and thus the plurality of corrugated cardboard by the cutting blade 126. The box connecting body B0 is cut and divided into two parts in the front-rear direction to obtain corrugated cardboard boxes B1 and B2. At this time, the control device 231 controls so that the pressing force of the plurality of corrugated cardboard box couplings B0 by the pressing device 125 when the cutting blade 126 divides the plurality of corrugated cardboard box couplings B0 back and forth is gradually reduced.

That is, the plurality of corrugated cardboard box connectors B0 on the inlet side lower conveyor 121 and the outlet side lower conveyor 122 are pressed from above by the pressing device 125, and the width direction Db is pressed by the left side aligning device 112 and the right side aligning device 113. It is supported not to move to. Since the plurality of corrugated cardboard box connecting bodies B0 are cut by the cutting blade 126 by descending in this state, cutting resistance is generated between the corrugated cardboard box connecting body B0 and the cutting blade 126. If this cutting resistance is high, the cutting blade 126 may move the corrugated cardboard box connecting body B0 in the width direction Db and strongly press it against the aligning devices 112 and 113 to damage it. Therefore, when the number of the corrugated cardboard box connecting bodies B0 to be cut by the cutting blade 126 is large, the control device 231 presses the corrugated cardboard box connecting bodies B0 with the set pressing force. On the other hand, when the number of cardboard box connecting bodies B0 to be cut by the cutting blade 126 is small, the control device 231 presses the cardboard box connecting body B0 with a pressing force lower than the set pressing force.

In this case, it is desirable that the control device 231 reduces the pressing force of the pressing device 125 steplessly and smoothly as the number of corrugated cardboard box connecting bodies B0 cut by the cutting blade 126 decreases. However, the control device 231 may gradually reduce the pressing force of the pressing device 125 as the number of corrugated cardboard box connecting bodies B0 cut by the cutting blade 126 decreases.

The pressing device 125 includes width direction pressing members 149 and 150 and transport direction pressing members 151 and 152. The width direction pressing members 149,150 and the transport direction pressing members 151, 152 are reduced in weight by adopting a resin material, and frictional resistance members 282, 283 are provided on the lower surface for pressing the corrugated cardboard box connecting body B0. .. Therefore, in the pressing device 125, the width direction pressing members 149, 150 and the transport direction pressing members 151, 152 press the corrugated cardboard box connecting body B0 via the friction resistance members 282, 283 to cut the corrugated cardboard box connecting body B0. It is possible to suppress the deviation when doing so.

As described above, in the corrugated cardboard box dividing device of the other embodiment, the height sensor 281 for detecting the height of the plurality of corrugated cardboard box connecting bodies B0 stacked on the conveyor 81 is provided, and the control device 231 has the height. The carry-in upper conveyor moving device 111 is controlled based on the detection result of the sensor 281.

Therefore, the carry-in upper conveyor 102 can be moved up and down according to the heights of the plurality of corrugated cardboard box connectors B0 conveyed to the carry-in lower conveyor 101 and the carry-in upper conveyor 102, and the carry-in lower conveyor 101 and the carry-in upper conveyor 102 can move up and down. Regardless of the height of the plurality of corrugated cardboard box connecting bodies B0, the plurality of corrugated cardboard box connecting bodies B0 can be stably accepted.

In the corrugated cardboard box dividing device of another embodiment, the control device 231 applies the pressing force of the plurality of corrugated cardboard box connectors B0 by the pressing device 125 when the cutting blade 126 divides the plurality of corrugated cardboard box connectors B0 back and forth. I try to reduce it gradually.

Therefore, as the number of the corrugated cardboard box connecting bodies B0 divided by the cutting blade 126 decreases, the pressing force of the corrugated cardboard box connecting body B0 decreases, and the reaction force acting on the cutting blade 126 from the corrugated cardboard box connecting body B0 is appropriate. It becomes a value, and damage at the time of division of the corrugated cardboard box connecting body B0 can be suppressed.

In the above-described embodiment, the pressing position setting device 251 is arranged and configured at the position of the carry-in device 72, but the present invention is not limited to this position. For example, the upper conveyors 123 and 124 may be applied as the pressure measuring member by arranging the cutting device 73 at the position. Further, although the carry-in conveyor 102 is applied as the pressure measuring member, a dedicated pressure measuring member may be provided separately.

Further, in the above-described embodiment, the urging member (air cylinder 264) and the height detector are used to detect the pressing reaction force when the plurality of corrugated cardboard box connecting bodies B0 in which the pressing measuring members are stacked are pressed. (Height sensor 252), detection piece 253, and the like are provided, but the present invention is not limited to this configuration. For example, a load detection sensor such as a pressure measuring member load cell may be provided.

Further, in the above-described embodiment, the box making machine 10A processes the double box sheet S0 to manufacture the corrugated cardboard box connecting body B0, and the dividing device 71 cuts the corrugated cardboard box connecting body B0 to form the corrugated cardboard boxes B1 and B2. It is supposed to be manufactured, but it is not limited to such a thing. For example, a box making machine may process a triple box sheet to manufacture a corrugated cardboard box connector, and a dividing device may cut the corrugated cardboard box connector into three pieces to manufacture a corrugated cardboard box. In this case, the sizes of the manufactured cardboard boxes may be the same or different. That is, by shifting the stop position (cutting position) of the corrugated cardboard box connector B0 in the cutting device 73 in the transport direction Da, the corrugated cardboard box connector B0 of different sizes can be manufactured.

Further, in the above-described embodiment, the corrugated cardboard box connector B0 is cut by lowering the corrugated cardboard box connector B0 with respect to the cutting blade 126, but the corrugated cardboard box connector B0 is raised with respect to the cutting blade 126. By doing so, the corrugated cardboard box connecting body B0 may be cut, or by raising or lowering the cutting blade 126 with respect to the corrugated cardboard box connecting body B0, the corrugated cardboard box connecting body B0 may be cut.

Further, in the above-described embodiment, the inlet side lower conveyor 121 and the outlet side lower conveyor 122 are provided as the lower conveyor, and the inlet side upper conveyor 123 and the outlet side upper conveyor 124 are provided as the upper conveyor, but they are not divided into front and rear. It may be provided integrally with. Further, as various drive devices, an electric motor, a hydraulic motor, a hydraulic cylinder, an air cylinder, or the like may be used.

Further, in the above-described embodiment, the box making machine 10A is composed of the paper feeding unit 11, the printing unit 21, the paper discharging unit 31, the die cutting unit 41, the folding unit 51, and the counter ejector unit 61, but the configuration is limited to this. It's not something. For example, when printing is not required on the corrugated cardboard sheet S or the corrugated cardboard box connector B0, the printing unit 21 may be eliminated. Further, for example, when the corrugated cardboard sheet S or the corrugated cardboard box connecting body B0 does not require punching such as a hand hole, the die-cut portion 41 may be eliminated.

10 Corrugated cardboard box manufacturing equipment 10A Box making machine 11 Feeding unit 21 Printing unit 31 Paper ejection unit 41 Die-cutting unit 51 Folding unit 61 Counter ejector unit 71 Corrugated cardboard box dividing device (dividing device)
72 Carry-in device 73 Cutting device 74 Carry-out device 81 Conveyor conveyor (cardboard box joint transport conveyor)
101 Carry-in lower conveyor 102 Carry-in upper conveyor (pressing measurement member)
109, 110 Drive motor 111 Carry-in top conveyor moving device (pressing member moving device)
112 Left side aligning device 113 Right side aligning device 118 Opening / closing door 119 Drive cylinder 121 Entrance side lower conveyor (lower conveyor)
122 Exit side lower conveyor (lower conveyor)
123 Entrance side upper conveyor (upper conveyor)
124 Exit side upper conveyor (upper conveyor)
125 Pressing device 126 Cutting blade 127 Lifting device 128 Positioning device 137, 138, 145, 146 Drive motor 147 Inlet side upper conveyor moving device 148 Exit side upper conveyor moving device 149,150 Width direction pressing member 151,152 Transport direction pressing member 153 Pressing drive device 156 Cutting blade drive device 157 Lifting platform 158 Lifting drive device 161 Upstream side positioning member 162 Downstream side positioning member 163,169 Support cylinder 164,170 Outer cylinder 165,171 Inner cylinder 166,172 First drive device (positioning drive) Device)
167,173 Second drive device (positioning drive device)
168,174 Third drive device (positioning drive device)
175 Left side aligning device 176 Right side aligning device 181 Unloading conveyor 182 Unloading conveyor 189,190 Drive motor 191 Unloading conveyor moving device 231 Control device 232 Arrival detection sensor 233 Passage detection sensor 251 Pressing position setting device 252 Height sensor ( Height detector)
261 Lower frame (lower pressing member)
262 Upper frame (upper pressing member)
264 air cylinder (urging member, fluid pressure cylinder)
272 Electro-pneumatic transducer (biased bearing capacity adjuster)
273 Rotary encoder 274 Inlet sensor 275 Carry-in device arrival sensor 281 Height sensor (connector height detector)
S Corrugated cardboard sheet S1, S2 Single box sheet S0 Double box sheet B, B1, B2 Corrugated cardboard box B0 Corrugated cardboard box connector

Claims (12)

In a corrugated cardboard box dividing device in which a plurality of corrugated cardboard box joints that are continuous along the transport direction are stacked in the thickness direction and the corrugated cardboard box joint laminate is cut and divided along the width direction that intersects the transport direction.
A lower conveyor that stacks and conveys multiple cardboard box connectors,
A pressing device that presses a plurality of corrugated cardboard box joints stacked on the lower conveyor from above,
A cutting blade that divides a plurality of corrugated cardboard box connectors arranged along the width direction of the corrugated cardboard box connector and stacked on the lower conveyor in the front-rear direction.
An elevating device that moves the plurality of corrugated cardboard box connectors on the lower conveyor and the cutting blade relative to each other in the vertical direction.
The pressing device is operated based on the elevating height of the pressing measuring member when the pressing reaction force when pressing a plurality of corrugated cardboard box joints in which the pressing measuring members are stacked reaches a preset reference pressing reaction force. The control device to control and
Bei to give a,
The carry-in lower conveyor is arranged on the upstream side of the corrugated cardboard box connector in the transport direction from the lower conveyor, and the pressure measuring member is arranged so as to face above the carry-in lower conveyor.
A cardboard box partitioning device characterized by the fact that. A height detector for detecting the elevating height of the pressure measuring member when the pressing reaction force acting on the pressure measuring member from the stacked corrugated cardboard box joints reaches the reference pressing reaction force is provided. The corrugated cardboard box dividing device according to claim 1, wherein the control device controls the pressing device based on the detection result of the height detector. The pressing device includes a pressing member that is supported so as to be able to move up and down, and a pressing drive device that raises and lowers the pressing member. The corrugated cardboard box dividing device according to claim 1 or 2, wherein the pressing position of the pressing member is adjusted by the pressing drive device based on the elevating height of the pressing member when the pressure is reached. The pressure measuring member is configured such that the upper pressing member and the lower pressing member can approach and separate from each other and are urged and supported in a direction in which the upper pressing member is separated from each other by the urging member. The control device is based on the ascending / descending height of the lower pressing member when the pressing reaction force acting on the lower pressing member from the corrugated cardboard box coupling reaches the reference pressing reaction force. The corrugated cardboard box dividing device according to any one of claims 1 to 3, wherein the pressing device is controlled. The urging member is a fluid pressure cylinder, and the lower pressing member can be raised and lowered with respect to the upper pressing member, and the lower pressing member is urged and supported downward with respect to the upper pressing member. The corrugated cardboard box dividing device according to claim 4. The corrugated cardboard box dividing device according to claim 5 , wherein an urging bearing force adjusting device for adjusting the urging bearing force of the downward pressing member by the fluid pressure cylinder is provided. When the corrugated cardboard box connecting body is carried into the carrying-in lower conveyor, the control device performs the pressing if the pressing reaction force acting on the pressing measuring member from the corrugated cardboard box connecting body does not reach the reference pressing reaction force. Control the pressing device based on the ascending / descending height of the pressing measuring member when the measuring member is lowered and the pressing reaction force acting on the pressing measuring member from the corrugated cardboard box coupling reaches the reference pressing reaction force. The corrugated cardboard box dividing device according to any one of claims 1 to 6, wherein the corrugated cardboard box is divided. When the corrugated cardboard box connecting body is carried into the carrying-in lower conveyor, the control device said that the pressing reaction force acting on the pressing measuring member from the corrugated cardboard box connecting body reaches the reference pressing reaction force. The pressing device is controlled based on the ascending / descending height of the pressing measuring member when the pressing reaction force acting on the pressing reaction force from the corrugated cardboard box connecting body is lowered from the reference pressing reaction force by raising the pressing measuring member. The corrugated cardboard box dividing device according to any one of claims 1 to 7, wherein the corrugated cardboard box is divided. The corrugated cardboard box dividing device according to any one of claims 1 to 8 , wherein the pressure measuring member is a carry-in upper conveyor arranged above the carry-in lower conveyor so as to face each other. A carry-in upper conveyor that supports the upper part of a plurality of corrugated cardboard box connectors arranged and stacked facing each other above the carry-in lower conveyor, a carry-in upper conveyor moving device that moves the carry-in upper conveyor up and down, and the carry-in lower The height of the corrugated cardboard box connector arranged upstream of the conveyor in the transport direction of the corrugated cardboard box connector and the height of the plurality of corrugated cardboard box connectors stacked on the corrugated cardboard box connector transport conveyor. Any one of claims 1 to 9 , wherein the control device has a corrugated cardboard detector and controls the carry-in upper conveyor moving device based on the detection result of the corrugated cardboard height detector. The cardboard box splitting device described in the section. The control device according claim 1, wherein the gradually reducing the pressure of a plurality of cardboard boxes connecting body by the pressing device when the cutting blade is divided into a plurality of cardboard boxes connected body around Item 2. The corrugated cardboard box dividing device according to any one of items 10. A paper feed unit that supplies double box sheets,
A paper ejection part that performs ruled line processing and grooving processing on the surface of the double box sheet,
A folding portion that forms a corrugated cardboard box joint by folding the double box sheet and joining the ends.
A counter ejector unit that counts and stacks the corrugated cardboard box joints and then discharges them in predetermined numbers.
The corrugated cardboard box dividing device according to any one of claims 1 to 11 , wherein the corrugated cardboard box connector is cut and divided along a width direction intersecting the transport direction.
A corrugated cardboard box manufacturing apparatus characterized by being provided with.

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